Home / 679,909.57-938,298.23-374,008.69

Finding the Fourth Proportional to 679,909.57, 938,298.23 and 374,008.69

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Solution

The fourth proportional to 679,909.57, 938,298.23 and 374,008.69 is: 516,144.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,909.57 : 938,298.23 = 374,008.69 : x
  2. Step 2: Convert to fraction form
    679,909.57/938,298.23 = 374,008.69/x
  3. Step 3: Cross multiply
    679,909.57x = 938,298.23 × 374,008.69
  4. Step 4: Simplify right side
    679,909.57x = 350,931,691,831.62
  5. Step 5: Solve for x
    x = 350,931,691,831.62/679,909.57
  6. Step 6: Final answer
    x = 516,144.66

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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.