Home / 1,431,486.27-2,145,456.72-721,126.80

Finding the Fourth Proportional to 1,431,486.27, 2,145,456.72 and 721,126.80

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Solution

The fourth proportional to 1,431,486.27, 2,145,456.72 and 721,126.80 is: 1,080,797.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,486.27 : 2,145,456.72 = 721,126.80 : x
  2. Step 2: Convert to fraction form
    1,431,486.27/2,145,456.72 = 721,126.80/x
  3. Step 3: Cross multiply
    1,431,486.27x = 2,145,456.72 × 721,126.80
  4. Step 4: Simplify right side
    1,431,486.27x = 1,547,146,339,032.10
  5. Step 5: Solve for x
    x = 1,547,146,339,032.10/1,431,486.27
  6. Step 6: Final answer
    x = 1,080,797.19

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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.