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Finding the Fourth Proportional to 439,207.60, 658,811.40 and 407,714.80

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Solution

The fourth proportional to 439,207.60, 658,811.40 and 407,714.80 is: 611,572.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,207.60 : 658,811.40 = 407,714.80 : x
  2. Step 2: Convert to fraction form
    439,207.60/658,811.40 = 407,714.80/x
  3. Step 3: Cross multiply
    439,207.60x = 658,811.40 × 407,714.80
  4. Step 4: Simplify right side
    439,207.60x = 268,607,158,188.72
  5. Step 5: Solve for x
    x = 268,607,158,188.72/439,207.60
  6. Step 6: Final answer
    x = 611,572.20

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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.