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Finding the Fourth Proportional to 485,243.60, 727,962.60 and 406,900.40

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Solution

The fourth proportional to 485,243.60, 727,962.60 and 406,900.40 is: 610,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,243.60 : 727,962.60 = 406,900.40 : x
  2. Step 2: Convert to fraction form
    485,243.60/727,962.60 = 406,900.40/x
  3. Step 3: Cross multiply
    485,243.60x = 727,962.60 × 406,900.40
  4. Step 4: Simplify right side
    485,243.60x = 296,208,273,125.04
  5. Step 5: Solve for x
    x = 296,208,273,125.04/485,243.60
  6. Step 6: Final answer
    x = 610,432.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.