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Finding the Fourth Proportional to 482,792.40, 724,318.20 and 430,563.60

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Solution

The fourth proportional to 482,792.40, 724,318.20 and 430,563.60 is: 645,960.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,792.40 : 724,318.20 = 430,563.60 : x
  2. Step 2: Convert to fraction form
    482,792.40/724,318.20 = 430,563.60/x
  3. Step 3: Cross multiply
    482,792.40x = 724,318.20 × 430,563.60
  4. Step 4: Simplify right side
    482,792.40x = 311,865,051,737.52
  5. Step 5: Solve for x
    x = 311,865,051,737.52/482,792.40
  6. Step 6: Final answer
    x = 645,960.98

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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.