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Finding the Fourth Proportional to 1,295,714.80, 1,788,074.22 and 714,943.18

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Solution

The fourth proportional to 1,295,714.80, 1,788,074.22 and 714,943.18 is: 986,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,714.80 : 1,788,074.22 = 714,943.18 : x
  2. Step 2: Convert to fraction form
    1,295,714.80/1,788,074.22 = 714,943.18/x
  3. Step 3: Cross multiply
    1,295,714.80x = 1,788,074.22 × 714,943.18
  4. Step 4: Simplify right side
    1,295,714.80x = 1,278,371,468,922.82
  5. Step 5: Solve for x
    x = 1,278,371,468,922.82/1,295,714.80
  6. Step 6: Final answer
    x = 986,614.85

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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.