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Finding the Fourth Proportional to 536,728.20, 739,866.20 and 454,753.90

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Solution

The fourth proportional to 536,728.20, 739,866.20 and 454,753.90 is: 626,866.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,728.20 : 739,866.20 = 454,753.90 : x
  2. Step 2: Convert to fraction form
    536,728.20/739,866.20 = 454,753.90/x
  3. Step 3: Cross multiply
    536,728.20x = 739,866.20 × 454,753.90
  4. Step 4: Simplify right side
    536,728.20x = 336,457,039,928.18
  5. Step 5: Solve for x
    x = 336,457,039,928.18/536,728.20
  6. Step 6: Final answer
    x = 626,866.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.