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Finding the Fourth Proportional to 521,879.58, 782,150.28 and 454,129.98

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Solution

The fourth proportional to 521,879.58, 782,150.28 and 454,129.98 is: 680,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,879.58 : 782,150.28 = 454,129.98 : x
  2. Step 2: Convert to fraction form
    521,879.58/782,150.28 = 454,129.98/x
  3. Step 3: Cross multiply
    521,879.58x = 782,150.28 × 454,129.98
  4. Step 4: Simplify right side
    521,879.58x = 355,197,891,013.39
  5. Step 5: Solve for x
    x = 355,197,891,013.39/521,879.58
  6. Step 6: Final answer
    x = 680,612.74

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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.