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Finding the Fourth Proportional to 625,322.70, 862,946.06 and 338,840.28

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Solution

The fourth proportional to 625,322.70, 862,946.06 and 338,840.28 is: 467,599.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,322.70 : 862,946.06 = 338,840.28 : x
  2. Step 2: Convert to fraction form
    625,322.70/862,946.06 = 338,840.28/x
  3. Step 3: Cross multiply
    625,322.70x = 862,946.06 × 338,840.28
  4. Step 4: Simplify right side
    625,322.70x = 292,400,882,901.10
  5. Step 5: Solve for x
    x = 292,400,882,901.10/625,322.70
  6. Step 6: Final answer
    x = 467,599.98

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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.