Home / 497,854.12-687,079.78-283,061.80

Finding the Fourth Proportional to 497,854.12, 687,079.78 and 283,061.80

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Solution

The fourth proportional to 497,854.12, 687,079.78 and 283,061.80 is: 390,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,854.12 : 687,079.78 = 283,061.80 : x
  2. Step 2: Convert to fraction form
    497,854.12/687,079.78 = 283,061.80/x
  3. Step 3: Cross multiply
    497,854.12x = 687,079.78 × 283,061.80
  4. Step 4: Simplify right side
    497,854.12x = 194,486,039,270.40
  5. Step 5: Solve for x
    x = 194,486,039,270.40/497,854.12
  6. Step 6: Final answer
    x = 390,648.65

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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.