Home / 676,384.92-933,291.18-389,917.08

Finding the Fourth Proportional to 676,384.92, 933,291.18 and 389,917.08

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Solution

The fourth proportional to 676,384.92, 933,291.18 and 389,917.08 is: 538,016.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,384.92 : 933,291.18 = 389,917.08 : x
  2. Step 2: Convert to fraction form
    676,384.92/933,291.18 = 389,917.08/x
  3. Step 3: Cross multiply
    676,384.92x = 933,291.18 × 389,917.08
  4. Step 4: Simplify right side
    676,384.92x = 363,906,171,695.35
  5. Step 5: Solve for x
    x = 363,906,171,695.35/676,384.92
  6. Step 6: Final answer
    x = 538,016.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.