Home / 497,905.13-687,105.92-283,045.20

Finding the Fourth Proportional to 497,905.13, 687,105.92 and 283,045.20

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Solution

The fourth proportional to 497,905.13, 687,105.92 and 283,045.20 is: 390,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,905.13 : 687,105.92 = 283,045.20 : x
  2. Step 2: Convert to fraction form
    497,905.13/687,105.92 = 283,045.20/x
  3. Step 3: Cross multiply
    497,905.13x = 687,105.92 × 283,045.20
  4. Step 4: Simplify right side
    497,905.13x = 194,482,031,132.36
  5. Step 5: Solve for x
    x = 194,482,031,132.36/497,905.13
  6. Step 6: Final answer
    x = 390,600.58

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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.