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Finding the Fourth Proportional to 500,171.74, 750,256.48 and 386,484.87

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Solution

The fourth proportional to 500,171.74, 750,256.48 and 386,484.87 is: 579,726.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,171.74 : 750,256.48 = 386,484.87 : x
  2. Step 2: Convert to fraction form
    500,171.74/750,256.48 = 386,484.87/x
  3. Step 3: Cross multiply
    500,171.74x = 750,256.48 × 386,484.87
  4. Step 4: Simplify right side
    500,171.74x = 289,962,778,139.46
  5. Step 5: Solve for x
    x = 289,962,778,139.46/500,171.74
  6. Step 6: Final answer
    x = 579,726.43

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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.