Home / 389,864.39-584,869.47-123,553.40

Finding the Fourth Proportional to 389,864.39, 584,869.47 and 123,553.40

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Solution

The fourth proportional to 389,864.39, 584,869.47 and 123,553.40 is: 185,353.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,864.39 : 584,869.47 = 123,553.40 : x
  2. Step 2: Convert to fraction form
    389,864.39/584,869.47 = 123,553.40/x
  3. Step 3: Cross multiply
    389,864.39x = 584,869.47 × 123,553.40
  4. Step 4: Simplify right side
    389,864.39x = 72,262,608,650.35
  5. Step 5: Solve for x
    x = 72,262,608,650.35/389,864.39
  6. Step 6: Final answer
    x = 185,353.19

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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.