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Finding the Fourth Proportional to 482,740.40, 724,240.20 and 430,511.60

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Solution

The fourth proportional to 482,740.40, 724,240.20 and 430,511.60 is: 645,882.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,740.40 : 724,240.20 = 430,511.60 : x
  2. Step 2: Convert to fraction form
    482,740.40/724,240.20 = 430,511.60/x
  3. Step 3: Cross multiply
    482,740.40x = 724,240.20 × 430,511.60
  4. Step 4: Simplify right side
    482,740.40x = 311,793,807,286.32
  5. Step 5: Solve for x
    x = 311,793,807,286.32/482,740.40
  6. Step 6: Final answer
    x = 645,882.98

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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.