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Finding the Fourth Proportional to 659,608.71, 910,282.37 and 387,672.68

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Solution

The fourth proportional to 659,608.71, 910,282.37 and 387,672.68 is: 535,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,608.71 : 910,282.37 = 387,672.68 : x
  2. Step 2: Convert to fraction form
    659,608.71/910,282.37 = 387,672.68/x
  3. Step 3: Cross multiply
    659,608.71x = 910,282.37 × 387,672.68
  4. Step 4: Simplify right side
    659,608.71x = 352,891,599,444.88
  5. Step 5: Solve for x
    x = 352,891,599,444.88/659,608.71
  6. Step 6: Final answer
    x = 535,001.42

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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.