Home / 1,208,300.90-1,667,398.17-664,459.61

Finding the Fourth Proportional to 1,208,300.90, 1,667,398.17 and 664,459.61

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Solution

The fourth proportional to 1,208,300.90, 1,667,398.17 and 664,459.61 is: 916,922.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,300.90 : 1,667,398.17 = 664,459.61 : x
  2. Step 2: Convert to fraction form
    1,208,300.90/1,667,398.17 = 664,459.61/x
  3. Step 3: Cross multiply
    1,208,300.90x = 1,667,398.17 × 664,459.61
  4. Step 4: Simplify right side
    1,208,300.90x = 1,107,918,737,752.91
  5. Step 5: Solve for x
    x = 1,107,918,737,752.91/1,208,300.90
  6. Step 6: Final answer
    x = 916,922.88

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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.