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Finding the Fourth Proportional to 659,866.27, 910,635.63 and 387,884.26

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Solution

The fourth proportional to 659,866.27, 910,635.63 and 387,884.26 is: 535,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,866.27 : 910,635.63 = 387,884.26 : x
  2. Step 2: Convert to fraction form
    659,866.27/910,635.63 = 387,884.26/x
  3. Step 3: Cross multiply
    659,866.27x = 910,635.63 × 387,884.26
  4. Step 4: Simplify right side
    659,866.27x = 353,221,227,472.18
  5. Step 5: Solve for x
    x = 353,221,227,472.18/659,866.27
  6. Step 6: Final answer
    x = 535,292.14

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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.