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Finding the Fourth Proportional to 513,043.20, 769,564.80 and 453,994.20

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Solution

The fourth proportional to 513,043.20, 769,564.80 and 453,994.20 is: 680,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,043.20 : 769,564.80 = 453,994.20 : x
  2. Step 2: Convert to fraction form
    513,043.20/769,564.80 = 453,994.20/x
  3. Step 3: Cross multiply
    513,043.20x = 769,564.80 × 453,994.20
  4. Step 4: Simplify right side
    513,043.20x = 349,377,955,724.16
  5. Step 5: Solve for x
    x = 349,377,955,724.16/513,043.20
  6. Step 6: Final answer
    x = 680,991.30

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Similar ratio
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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.