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Finding the Fourth Proportional to 680,254.72, 938,760.15 and 374,366.32

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Solution

The fourth proportional to 680,254.72, 938,760.15 and 374,366.32 is: 516,630.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,254.72 : 938,760.15 = 374,366.32 : x
  2. Step 2: Convert to fraction form
    680,254.72/938,760.15 = 374,366.32/x
  3. Step 3: Cross multiply
    680,254.72x = 938,760.15 × 374,366.32
  4. Step 4: Simplify right side
    680,254.72x = 351,440,182,718.15
  5. Step 5: Solve for x
    x = 351,440,182,718.15/680,254.72
  6. Step 6: Final answer
    x = 516,630.27

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1.5x scale

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.