Home / 1,220,346,075.40-1,830,519,113.10-391,298,115.40

Finding the Fourth Proportional to 1,220,346,075.40, 1,830,519,113.10 and 391,298,115.40

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Solution

The fourth proportional to 1,220,346,075.40, 1,830,519,113.10 and 391,298,115.40 is: 586,947,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,075.40 : 1,830,519,113.10 = 391,298,115.40 : x
  2. Step 2: Convert to fraction form
    1,220,346,075.40/1,830,519,113.10 = 391,298,115.40/x
  3. Step 3: Cross multiply
    1,220,346,075.40x = 1,830,519,113.10 × 391,298,115.40
  4. Step 4: Simplify right side
    1,220,346,075.40x = 716,278,679,159,709,312
  5. Step 5: Solve for x
    x = 716,278,679,159,709,312/1,220,346,075.40
  6. Step 6: Final answer
    x = 586,947,173.10

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Double scale
Find fourth proportional to 1,220,346,076.40, 1,830,519,114.60 and 391,298,116.40
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.