Home / 1,220,346,079.80-1,830,519,119.70-402,415,078.20

Finding the Fourth Proportional to 1,220,346,079.80, 1,830,519,119.70 and 402,415,078.20

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Solution

The fourth proportional to 1,220,346,079.80, 1,830,519,119.70 and 402,415,078.20 is: 603,622,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,079.80 : 1,830,519,119.70 = 402,415,078.20 : x
  2. Step 2: Convert to fraction form
    1,220,346,079.80/1,830,519,119.70 = 402,415,078.20/x
  3. Step 3: Cross multiply
    1,220,346,079.80x = 1,830,519,119.70 × 402,415,078.20
  4. Step 4: Simplify right side
    1,220,346,079.80x = 736,628,494,700,670,720
  5. Step 5: Solve for x
    x = 736,628,494,700,670,720/1,220,346,079.80
  6. Step 6: Final answer
    x = 603,622,617.30

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Double scale
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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.