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Finding the Fourth Proportional to 500,439.36, 750,663.90 and 126,462.36

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Solution

The fourth proportional to 500,439.36, 750,663.90 and 126,462.36 is: 189,694.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,439.36 : 750,663.90 = 126,462.36 : x
  2. Step 2: Convert to fraction form
    500,439.36/750,663.90 = 126,462.36/x
  3. Step 3: Cross multiply
    500,439.36x = 750,663.90 × 126,462.36
  4. Step 4: Simplify right side
    500,439.36x = 94,930,728,360.80
  5. Step 5: Solve for x
    x = 94,930,728,360.80/500,439.36
  6. Step 6: Final answer
    x = 189,694.77

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1.5x scale

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.