Home / 729,155.08-1,006,083.70-418,997.71

Finding the Fourth Proportional to 729,155.08, 1,006,083.70 and 418,997.71

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Solution

The fourth proportional to 729,155.08, 1,006,083.70 and 418,997.71 is: 578,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,155.08 : 1,006,083.70 = 418,997.71 : x
  2. Step 2: Convert to fraction form
    729,155.08/1,006,083.70 = 418,997.71/x
  3. Step 3: Cross multiply
    729,155.08x = 1,006,083.70 × 418,997.71
  4. Step 4: Simplify right side
    729,155.08x = 421,546,766,368.33
  5. Step 5: Solve for x
    x = 421,546,766,368.33/729,155.08
  6. Step 6: Final answer
    x = 578,130.47

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1.5x scale

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.