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Finding the Fourth Proportional to 656,891.40, 984,656.70 and 356,737.80

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Solution

The fourth proportional to 656,891.40, 984,656.70 and 356,737.80 is: 534,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,891.40 : 984,656.70 = 356,737.80 : x
  2. Step 2: Convert to fraction form
    656,891.40/984,656.70 = 356,737.80/x
  3. Step 3: Cross multiply
    656,891.40x = 984,656.70 × 356,737.80
  4. Step 4: Simplify right side
    656,891.40x = 351,264,264,913.26
  5. Step 5: Solve for x
    x = 351,264,264,913.26/656,891.40
  6. Step 6: Final answer
    x = 534,737.20

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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.