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Finding the Fourth Proportional to 418,796.28, 627,582.06 and 260,543.88

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Solution

The fourth proportional to 418,796.28, 627,582.06 and 260,543.88 is: 390,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,796.28 : 627,582.06 = 260,543.88 : x
  2. Step 2: Convert to fraction form
    418,796.28/627,582.06 = 260,543.88/x
  3. Step 3: Cross multiply
    418,796.28x = 627,582.06 × 260,543.88
  4. Step 4: Simplify right side
    418,796.28x = 163,512,664,930.79
  5. Step 5: Solve for x
    x = 163,512,664,930.79/418,796.28
  6. Step 6: Final answer
    x = 390,434.86

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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.