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Finding the Fourth Proportional to 513,036.60, 768,680.10 and 437,803.80

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Solution

The fourth proportional to 513,036.60, 768,680.10 and 437,803.80 is: 655,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,036.60 : 768,680.10 = 437,803.80 : x
  2. Step 2: Convert to fraction form
    513,036.60/768,680.10 = 437,803.80/x
  3. Step 3: Cross multiply
    513,036.60x = 768,680.10 × 437,803.80
  4. Step 4: Simplify right side
    513,036.60x = 336,531,068,764.38
  5. Step 5: Solve for x
    x = 336,531,068,764.38/513,036.60
  6. Step 6: Final answer
    x = 655,959.18

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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.