Home / 749,087,998.20-1,123,631,997.30-612,927,127.80

Finding the Fourth Proportional to 749,087,998.20, 1,123,631,997.30 and 612,927,127.80

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Solution

The fourth proportional to 749,087,998.20, 1,123,631,997.30 and 612,927,127.80 is: 919,390,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,087,998.20 : 1,123,631,997.30 = 612,927,127.80 : x
  2. Step 2: Convert to fraction form
    749,087,998.20/1,123,631,997.30 = 612,927,127.80/x
  3. Step 3: Cross multiply
    749,087,998.20x = 1,123,631,997.30 × 612,927,127.80
  4. Step 4: Simplify right side
    749,087,998.20x = 688,704,532,809,266,304
  5. Step 5: Solve for x
    x = 688,704,532,809,266,304/749,087,998.20
  6. Step 6: Final answer
    x = 919,390,691.70

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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.