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Finding the Fourth Proportional to 503,721.20, 755,581.80 and 344,288.90

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Solution

The fourth proportional to 503,721.20, 755,581.80 and 344,288.90 is: 516,433.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,721.20 : 755,581.80 = 344,288.90 : x
  2. Step 2: Convert to fraction form
    503,721.20/755,581.80 = 344,288.90/x
  3. Step 3: Cross multiply
    503,721.20x = 755,581.80 × 344,288.90
  4. Step 4: Simplify right side
    503,721.20x = 260,138,426,782.02
  5. Step 5: Solve for x
    x = 260,138,426,782.02/503,721.20
  6. Step 6: Final answer
    x = 516,433.35

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Double scale
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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.