Home / 1,220,346,082.30-1,830,519,123.45-402,415,080.70

Finding the Fourth Proportional to 1,220,346,082.30, 1,830,519,123.45 and 402,415,080.70

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Solution

The fourth proportional to 1,220,346,082.30, 1,830,519,123.45 and 402,415,080.70 is: 603,622,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,082.30 : 1,830,519,123.45 = 402,415,080.70 : x
  2. Step 2: Convert to fraction form
    1,220,346,082.30/1,830,519,123.45 = 402,415,080.70/x
  3. Step 3: Cross multiply
    1,220,346,082.30x = 1,830,519,123.45 × 402,415,080.70
  4. Step 4: Simplify right side
    1,220,346,082.30x = 736,628,500,786,024,960
  5. Step 5: Solve for x
    x = 736,628,500,786,024,960/1,220,346,082.30
  6. Step 6: Final answer
    x = 603,622,621.05

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Half scale
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Double scale
Find fourth proportional to 1,220,346,083.30, 1,830,519,124.95 and 402,415,081.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.