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Finding the Fourth Proportional to 656,915.40, 984,692.70 and 356,761.80

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Solution

The fourth proportional to 656,915.40, 984,692.70 and 356,761.80 is: 534,773.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,915.40 : 984,692.70 = 356,761.80 : x
  2. Step 2: Convert to fraction form
    656,915.40/984,692.70 = 356,761.80/x
  3. Step 3: Cross multiply
    656,915.40x = 984,692.70 × 356,761.80
  4. Step 4: Simplify right side
    656,915.40x = 351,300,740,098.86
  5. Step 5: Solve for x
    x = 351,300,740,098.86/656,915.40
  6. Step 6: Final answer
    x = 534,773.18

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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.