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Finding the Fourth Proportional to 691,697.28, 954,543.94 and 385,793.48

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Solution

The fourth proportional to 691,697.28, 954,543.94 and 385,793.48 is: 532,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,697.28 : 954,543.94 = 385,793.48 : x
  2. Step 2: Convert to fraction form
    691,697.28/954,543.94 = 385,793.48/x
  3. Step 3: Cross multiply
    691,697.28x = 954,543.94 × 385,793.48
  4. Step 4: Simplify right side
    691,697.28x = 368,256,828,425.51
  5. Step 5: Solve for x
    x = 368,256,828,425.51/691,697.28
  6. Step 6: Final answer
    x = 532,395.95

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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.