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Finding the Fourth Proportional to 500,487.81, 750,731.72 and 126,510.81

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Solution

The fourth proportional to 500,487.81, 750,731.72 and 126,510.81 is: 189,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,487.81 : 750,731.72 = 126,510.81 : x
  2. Step 2: Convert to fraction form
    500,487.81/750,731.72 = 126,510.81/x
  3. Step 3: Cross multiply
    500,487.81x = 750,731.72 × 126,510.81
  4. Step 4: Simplify right side
    500,487.81x = 94,975,677,357.34
  5. Step 5: Solve for x
    x = 94,975,677,357.34/500,487.81
  6. Step 6: Final answer
    x = 189,766.22

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Similar ratio
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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.