Home / 522,086.20-781,379.70-459,100.60

Finding the Fourth Proportional to 522,086.20, 781,379.70 and 459,100.60

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Solution

The fourth proportional to 522,086.20, 781,379.70 and 459,100.60 is: 687,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,086.20 : 781,379.70 = 459,100.60 : x
  2. Step 2: Convert to fraction form
    522,086.20/781,379.70 = 459,100.60/x
  3. Step 3: Cross multiply
    522,086.20x = 781,379.70 × 459,100.60
  4. Step 4: Simplify right side
    522,086.20x = 358,731,889,097.82
  5. Step 5: Solve for x
    x = 358,731,889,097.82/522,086.20
  6. Step 6: Final answer
    x = 687,112.38

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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.