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Finding the Fourth Proportional to 679,651.30, 937,978.51 and 373,781.53

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Solution

The fourth proportional to 679,651.30, 937,978.51 and 373,781.53 is: 515,851.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,651.30 : 937,978.51 = 373,781.53 : x
  2. Step 2: Convert to fraction form
    679,651.30/937,978.51 = 373,781.53/x
  3. Step 3: Cross multiply
    679,651.30x = 937,978.51 × 373,781.53
  4. Step 4: Simplify right side
    679,651.30x = 350,599,039,295.52
  5. Step 5: Solve for x
    x = 350,599,039,295.52/679,651.30
  6. Step 6: Final answer
    x = 515,851.35

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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.