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Finding the Fourth Proportional to 488,399.40, 731,432.70 and 299,442.60

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Solution

The fourth proportional to 488,399.40, 731,432.70 and 299,442.60 is: 448,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,399.40 : 731,432.70 = 299,442.60 : x
  2. Step 2: Convert to fraction form
    488,399.40/731,432.70 = 299,442.60/x
  3. Step 3: Cross multiply
    488,399.40x = 731,432.70 × 299,442.60
  4. Step 4: Simplify right side
    488,399.40x = 219,022,109,413.02
  5. Step 5: Solve for x
    x = 219,022,109,413.02/488,399.40
  6. Step 6: Final answer
    x = 448,448.77

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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.