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Finding the Fourth Proportional to 494,702.10, 742,053.15 and 437,621.40

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Solution

The fourth proportional to 494,702.10, 742,053.15 and 437,621.40 is: 656,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,702.10 : 742,053.15 = 437,621.40 : x
  2. Step 2: Convert to fraction form
    494,702.10/742,053.15 = 437,621.40/x
  3. Step 3: Cross multiply
    494,702.10x = 742,053.15 × 437,621.40
  4. Step 4: Simplify right side
    494,702.10x = 324,738,338,377.41
  5. Step 5: Solve for x
    x = 324,738,338,377.41/494,702.10
  6. Step 6: Final answer
    x = 656,432.10

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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.