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Finding the Fourth Proportional to 659,596.96, 910,266.15 and 387,660.93

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Solution

The fourth proportional to 659,596.96, 910,266.15 and 387,660.93 is: 534,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,596.96 : 910,266.15 = 387,660.93 : x
  2. Step 2: Convert to fraction form
    659,596.96/910,266.15 = 387,660.93/x
  3. Step 3: Cross multiply
    659,596.96x = 910,266.15 × 387,660.93
  4. Step 4: Simplify right side
    659,596.96x = 352,874,622,256.52
  5. Step 5: Solve for x
    x = 352,874,622,256.52/659,596.96
  6. Step 6: Final answer
    x = 534,985.22

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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.