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Finding the Fourth Proportional to 513,721.20, 770,581.80 and 482,617.20

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Solution

The fourth proportional to 513,721.20, 770,581.80 and 482,617.20 is: 723,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,721.20 : 770,581.80 = 482,617.20 : x
  2. Step 2: Convert to fraction form
    513,721.20/770,581.80 = 482,617.20/x
  3. Step 3: Cross multiply
    513,721.20x = 770,581.80 × 482,617.20
  4. Step 4: Simplify right side
    513,721.20x = 371,896,030,686.96
  5. Step 5: Solve for x
    x = 371,896,030,686.96/513,721.20
  6. Step 6: Final answer
    x = 723,925.80

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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.