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Finding the Fourth Proportional to 680,471.88, 939,043.76 and 374,541.72

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Solution

The fourth proportional to 680,471.88, 939,043.76 and 374,541.72 is: 516,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,471.88 : 939,043.76 = 374,541.72 : x
  2. Step 2: Convert to fraction form
    680,471.88/939,043.76 = 374,541.72/x
  3. Step 3: Cross multiply
    680,471.88x = 939,043.76 × 374,541.72
  4. Step 4: Simplify right side
    680,471.88x = 351,711,065,025.67
  5. Step 5: Solve for x
    x = 351,711,065,025.67/680,471.88
  6. Step 6: Final answer
    x = 516,863.48

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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.