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Finding the Fourth Proportional to 971,489.16, 1,340,751.42 and 726,047.64

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Solution

The fourth proportional to 971,489.16, 1,340,751.42 and 726,047.64 is: 1,002,017.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,489.16 : 1,340,751.42 = 726,047.64 : x
  2. Step 2: Convert to fraction form
    971,489.16/1,340,751.42 = 726,047.64/x
  3. Step 3: Cross multiply
    971,489.16x = 1,340,751.42 × 726,047.64
  4. Step 4: Simplify right side
    971,489.16x = 973,449,404,317.65
  5. Step 5: Solve for x
    x = 973,449,404,317.65/971,489.16
  6. Step 6: Final answer
    x = 1,002,017.77

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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.