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Finding the Fourth Proportional to 658,776.44, 909,118.64 and 386,847.56

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Solution

The fourth proportional to 658,776.44, 909,118.64 and 386,847.56 is: 533,853.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,776.44 : 909,118.64 = 386,847.56 : x
  2. Step 2: Convert to fraction form
    658,776.44/909,118.64 = 386,847.56/x
  3. Step 3: Cross multiply
    658,776.44x = 909,118.64 × 386,847.56
  4. Step 4: Simplify right side
    658,776.44x = 351,690,327,634.52
  5. Step 5: Solve for x
    x = 351,690,327,634.52/658,776.44
  6. Step 6: Final answer
    x = 533,853.83

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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.