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Finding the Fourth Proportional to 482,587.96, 665,864.25 and 278,594.59

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Solution

The fourth proportional to 482,587.96, 665,864.25 and 278,594.59 is: 384,398.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,587.96 : 665,864.25 = 278,594.59 : x
  2. Step 2: Convert to fraction form
    482,587.96/665,864.25 = 278,594.59/x
  3. Step 3: Cross multiply
    482,587.96x = 665,864.25 × 278,594.59
  4. Step 4: Simplify right side
    482,587.96x = 185,506,177,724.41
  5. Step 5: Solve for x
    x = 185,506,177,724.41/482,587.96
  6. Step 6: Final answer
    x = 384,398.69

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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.