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Finding the Fourth Proportional to 575,512.20, 864,305.10 and 417,918.60

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Solution

The fourth proportional to 575,512.20, 864,305.10 and 417,918.60 is: 627,630.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,512.20 : 864,305.10 = 417,918.60 : x
  2. Step 2: Convert to fraction form
    575,512.20/864,305.10 = 417,918.60/x
  3. Step 3: Cross multiply
    575,512.20x = 864,305.10 × 417,918.60
  4. Step 4: Simplify right side
    575,512.20x = 361,209,177,364.86
  5. Step 5: Solve for x
    x = 361,209,177,364.86/575,512.20
  6. Step 6: Final answer
    x = 627,630.79

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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.