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Finding the Fourth Proportional to 439,620.60, 659,430.90 and 410,129.40

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Solution

The fourth proportional to 439,620.60, 659,430.90 and 410,129.40 is: 615,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,620.60 : 659,430.90 = 410,129.40 : x
  2. Step 2: Convert to fraction form
    439,620.60/659,430.90 = 410,129.40/x
  3. Step 3: Cross multiply
    439,620.60x = 659,430.90 × 410,129.40
  4. Step 4: Simplify right side
    439,620.60x = 270,451,999,358.46
  5. Step 5: Solve for x
    x = 270,451,999,358.46/439,620.60
  6. Step 6: Final answer
    x = 615,194.10

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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.