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Finding the Fourth Proportional to 519,978.60, 779,967.90 and 240,042.60

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Solution

The fourth proportional to 519,978.60, 779,967.90 and 240,042.60 is: 360,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,978.60 : 779,967.90 = 240,042.60 : x
  2. Step 2: Convert to fraction form
    519,978.60/779,967.90 = 240,042.60/x
  3. Step 3: Cross multiply
    519,978.60x = 779,967.90 × 240,042.60
  4. Step 4: Simplify right side
    519,978.60x = 187,225,522,632.54
  5. Step 5: Solve for x
    x = 187,225,522,632.54/519,978.60
  6. Step 6: Final answer
    x = 360,063.90

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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.