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Finding the Fourth Proportional to 668,079.60, 1,002,022.20 and 194,715.60

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Solution

The fourth proportional to 668,079.60, 1,002,022.20 and 194,715.60 is: 292,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,079.60 : 1,002,022.20 = 194,715.60 : x
  2. Step 2: Convert to fraction form
    668,079.60/1,002,022.20 = 194,715.60/x
  3. Step 3: Cross multiply
    668,079.60x = 1,002,022.20 × 194,715.60
  4. Step 4: Simplify right side
    668,079.60x = 195,109,353,886.32
  5. Step 5: Solve for x
    x = 195,109,353,886.32/668,079.60
  6. Step 6: Final answer
    x = 292,045.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.