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Finding the Fourth Proportional to 971,490.16, 1,340,752.80 and 726,048.64

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Solution

The fourth proportional to 971,490.16, 1,340,752.80 and 726,048.64 is: 1,002,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,490.16 : 1,340,752.80 = 726,048.64 : x
  2. Step 2: Convert to fraction form
    971,490.16/1,340,752.80 = 726,048.64/x
  3. Step 3: Cross multiply
    971,490.16x = 1,340,752.80 × 726,048.64
  4. Step 4: Simplify right side
    971,490.16x = 973,451,747,016.19
  5. Step 5: Solve for x
    x = 973,451,747,016.19/971,490.16
  6. Step 6: Final answer
    x = 1,002,019.15

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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.