Home / 497,769.10-687,597.51-390,231.12

Finding the Fourth Proportional to 497,769.10, 687,597.51 and 390,231.12

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Solution

The fourth proportional to 497,769.10, 687,597.51 and 390,231.12 is: 539,049.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,769.10 : 687,597.51 = 390,231.12 : x
  2. Step 2: Convert to fraction form
    497,769.10/687,597.51 = 390,231.12/x
  3. Step 3: Cross multiply
    497,769.10x = 687,597.51 × 390,231.12
  4. Step 4: Simplify right side
    497,769.10x = 268,321,944,415.58
  5. Step 5: Solve for x
    x = 268,321,944,415.58/497,769.10
  6. Step 6: Final answer
    x = 539,049.02

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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.