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Finding the Fourth Proportional to 703,148.45, 970,275.51 and 392,993.78

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Solution

The fourth proportional to 703,148.45, 970,275.51 and 392,993.78 is: 542,292.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,148.45 : 970,275.51 = 392,993.78 : x
  2. Step 2: Convert to fraction form
    703,148.45/970,275.51 = 392,993.78/x
  3. Step 3: Cross multiply
    703,148.45x = 970,275.51 × 392,993.78
  4. Step 4: Simplify right side
    703,148.45x = 381,312,235,464.95
  5. Step 5: Solve for x
    x = 381,312,235,464.95/703,148.45
  6. Step 6: Final answer
    x = 542,292.65

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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.