Home / 1,231,400.25-1,699,316.25-687,545.30

Finding the Fourth Proportional to 1,231,400.25, 1,699,316.25 and 687,545.30

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Solution

The fourth proportional to 1,231,400.25, 1,699,316.25 and 687,545.30 is: 948,803.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,400.25 : 1,699,316.25 = 687,545.30 : x
  2. Step 2: Convert to fraction form
    1,231,400.25/1,699,316.25 = 687,545.30/x
  3. Step 3: Cross multiply
    1,231,400.25x = 1,699,316.25 × 687,545.30
  4. Step 4: Simplify right side
    1,231,400.25x = 1,168,356,892,404.54
  5. Step 5: Solve for x
    x = 1,168,356,892,404.54/1,231,400.25
  6. Step 6: Final answer
    x = 948,803.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.