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Finding the Fourth Proportional to 500,541.80, 750,815.40 and 126,564.80

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Solution

The fourth proportional to 500,541.80, 750,815.40 and 126,564.80 is: 189,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,541.80 : 750,815.40 = 126,564.80 : x
  2. Step 2: Convert to fraction form
    500,541.80/750,815.40 = 126,564.80/x
  3. Step 3: Cross multiply
    500,541.80x = 750,815.40 × 126,564.80
  4. Step 4: Simplify right side
    500,541.80x = 95,026,800,937.92
  5. Step 5: Solve for x
    x = 95,026,800,937.92/500,541.80
  6. Step 6: Final answer
    x = 189,847.88

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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.