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Finding the Fourth Proportional to 543,607.40, 815,411.10 and 459,626.60

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Solution

The fourth proportional to 543,607.40, 815,411.10 and 459,626.60 is: 689,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,607.40 : 815,411.10 = 459,626.60 : x
  2. Step 2: Convert to fraction form
    543,607.40/815,411.10 = 459,626.60/x
  3. Step 3: Cross multiply
    543,607.40x = 815,411.10 × 459,626.60
  4. Step 4: Simplify right side
    543,607.40x = 374,784,631,495.26
  5. Step 5: Solve for x
    x = 374,784,631,495.26/543,607.40
  6. Step 6: Final answer
    x = 689,439.90

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Similar ratio
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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.