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Finding the Fourth Proportional to 684,680.40, 944,859.76 and 374,586.88

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Solution

The fourth proportional to 684,680.40, 944,859.76 and 374,586.88 is: 516,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,680.40 : 944,859.76 = 374,586.88 : x
  2. Step 2: Convert to fraction form
    684,680.40/944,859.76 = 374,586.88/x
  3. Step 3: Cross multiply
    684,680.40x = 944,859.76 × 374,586.88
  4. Step 4: Simplify right side
    684,680.40x = 353,932,069,535.95
  5. Step 5: Solve for x
    x = 353,932,069,535.95/684,680.40
  6. Step 6: Final answer
    x = 516,930.34

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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.