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Finding the Fourth Proportional to 499,862.80, 748,627.80 and 489,840.40

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Solution

The fourth proportional to 499,862.80, 748,627.80 and 489,840.40 is: 733,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,862.80 : 748,627.80 = 489,840.40 : x
  2. Step 2: Convert to fraction form
    499,862.80/748,627.80 = 489,840.40/x
  3. Step 3: Cross multiply
    499,862.80x = 748,627.80 × 489,840.40
  4. Step 4: Simplify right side
    499,862.80x = 366,708,141,003.12
  5. Step 5: Solve for x
    x = 366,708,141,003.12/499,862.80
  6. Step 6: Final answer
    x = 733,617.59

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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.