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Finding the Fourth Proportional to 522,040.20, 781,310.70 and 459,054.60

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Solution

The fourth proportional to 522,040.20, 781,310.70 and 459,054.60 is: 687,043.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,040.20 : 781,310.70 = 459,054.60 : x
  2. Step 2: Convert to fraction form
    522,040.20/781,310.70 = 459,054.60/x
  3. Step 3: Cross multiply
    522,040.20x = 781,310.70 × 459,054.60
  4. Step 4: Simplify right side
    522,040.20x = 358,664,270,864.22
  5. Step 5: Solve for x
    x = 358,664,270,864.22/522,040.20
  6. Step 6: Final answer
    x = 687,043.39

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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.