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Finding the Fourth Proportional to 529,287.20, 793,930.80 and 520,071.20

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Solution

The fourth proportional to 529,287.20, 793,930.80 and 520,071.20 is: 780,106.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,287.20 : 793,930.80 = 520,071.20 : x
  2. Step 2: Convert to fraction form
    529,287.20/793,930.80 = 520,071.20/x
  3. Step 3: Cross multiply
    529,287.20x = 793,930.80 × 520,071.20
  4. Step 4: Simplify right side
    529,287.20x = 412,900,543,872.96
  5. Step 5: Solve for x
    x = 412,900,543,872.96/529,287.20
  6. Step 6: Final answer
    x = 780,106.80

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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.