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Finding the Fourth Proportional to 1,423,714.08, 1,965,642.39 and 1,270,488.76

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Solution

The fourth proportional to 1,423,714.08, 1,965,642.39 and 1,270,488.76 is: 1,754,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,714.08 : 1,965,642.39 = 1,270,488.76 : x
  2. Step 2: Convert to fraction form
    1,423,714.08/1,965,642.39 = 1,270,488.76/x
  3. Step 3: Cross multiply
    1,423,714.08x = 1,965,642.39 × 1,270,488.76
  4. Step 4: Simplify right side
    1,423,714.08x = 2,497,326,568,817.17
  5. Step 5: Solve for x
    x = 2,497,326,568,817.17/1,423,714.08
  6. Step 6: Final answer
    x = 1,754,092.76

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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.