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Finding the Fourth Proportional to 1,245,657.22, 1,719,006.92 and 672,697.34

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Solution

The fourth proportional to 1,245,657.22, 1,719,006.92 and 672,697.34 is: 928,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,657.22 : 1,719,006.92 = 672,697.34 : x
  2. Step 2: Convert to fraction form
    1,245,657.22/1,719,006.92 = 672,697.34/x
  3. Step 3: Cross multiply
    1,245,657.22x = 1,719,006.92 × 672,697.34
  4. Step 4: Simplify right side
    1,245,657.22x = 1,156,371,382,525.59
  5. Step 5: Solve for x
    x = 1,156,371,382,525.59/1,245,657.22
  6. Step 6: Final answer
    x = 928,322.31

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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.