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Finding the Fourth Proportional to 679,393.20, 937,565.65 and 373,489.30

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Solution

The fourth proportional to 679,393.20, 937,565.65 and 373,489.30 is: 515,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,393.20 : 937,565.65 = 373,489.30 : x
  2. Step 2: Convert to fraction form
    679,393.20/937,565.65 = 373,489.30/x
  3. Step 3: Cross multiply
    679,393.20x = 937,565.65 × 373,489.30
  4. Step 4: Simplify right side
    679,393.20x = 350,170,734,687.56
  5. Step 5: Solve for x
    x = 350,170,734,687.56/679,393.20
  6. Step 6: Final answer
    x = 515,416.89

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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.