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Finding the Fourth Proportional to 1,245,664.79, 1,719,017.44 and 672,704.97

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Solution

The fourth proportional to 1,245,664.79, 1,719,017.44 and 672,704.97 is: 928,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,664.79 : 1,719,017.44 = 672,704.97 : x
  2. Step 2: Convert to fraction form
    1,245,664.79/1,719,017.44 = 672,704.97/x
  3. Step 3: Cross multiply
    1,245,664.79x = 1,719,017.44 × 672,704.97
  4. Step 4: Simplify right side
    1,245,664.79x = 1,156,391,567,276.60
  5. Step 5: Solve for x
    x = 1,156,391,567,276.60/1,245,664.79
  6. Step 6: Final answer
    x = 928,332.86

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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.