Home / 439,209.60-658,814.40-386,721.60

Finding the Fourth Proportional to 439,209.60, 658,814.40 and 386,721.60

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Solution

The fourth proportional to 439,209.60, 658,814.40 and 386,721.60 is: 580,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,209.60 : 658,814.40 = 386,721.60 : x
  2. Step 2: Convert to fraction form
    439,209.60/658,814.40 = 386,721.60/x
  3. Step 3: Cross multiply
    439,209.60x = 658,814.40 × 386,721.60
  4. Step 4: Simplify right side
    439,209.60x = 254,777,758,871.04
  5. Step 5: Solve for x
    x = 254,777,758,871.04/439,209.60
  6. Step 6: Final answer
    x = 580,082.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.