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Finding the Fourth Proportional to 659,214.38, 909,690.59 and 372,740.46

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Solution

The fourth proportional to 659,214.38, 909,690.59 and 372,740.46 is: 514,367.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,214.38 : 909,690.59 = 372,740.46 : x
  2. Step 2: Convert to fraction form
    659,214.38/909,690.59 = 372,740.46/x
  3. Step 3: Cross multiply
    659,214.38x = 909,690.59 × 372,740.46
  4. Step 4: Simplify right side
    659,214.38x = 339,078,488,974.27
  5. Step 5: Solve for x
    x = 339,078,488,974.27/659,214.38
  6. Step 6: Final answer
    x = 514,367.56

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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.