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Finding the Fourth Proportional to 680,615.96, 939,233.44 and 374,689.88

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Solution

The fourth proportional to 680,615.96, 939,233.44 and 374,689.88 is: 517,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,615.96 : 939,233.44 = 374,689.88 : x
  2. Step 2: Convert to fraction form
    680,615.96/939,233.44 = 374,689.88/x
  3. Step 3: Cross multiply
    680,615.96x = 939,233.44 × 374,689.88
  4. Step 4: Simplify right side
    680,615.96x = 351,921,264,925.59
  5. Step 5: Solve for x
    x = 351,921,264,925.59/680,615.96
  6. Step 6: Final answer
    x = 517,062.90

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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.