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Finding the Fourth Proportional to 575,458.80, 863,188.20 and 486,885.30

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Solution

The fourth proportional to 575,458.80, 863,188.20 and 486,885.30 is: 730,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,458.80 : 863,188.20 = 486,885.30 : x
  2. Step 2: Convert to fraction form
    575,458.80/863,188.20 = 486,885.30/x
  3. Step 3: Cross multiply
    575,458.80x = 863,188.20 × 486,885.30
  4. Step 4: Simplify right side
    575,458.80x = 420,273,645,713.46
  5. Step 5: Solve for x
    x = 420,273,645,713.46/575,458.80
  6. Step 6: Final answer
    x = 730,327.95

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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.