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Finding the Fourth Proportional to 978,002.30, 1,349,707.96 and 548,310.26

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Solution

The fourth proportional to 978,002.30, 1,349,707.96 and 548,310.26 is: 756,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,002.30 : 1,349,707.96 = 548,310.26 : x
  2. Step 2: Convert to fraction form
    978,002.30/1,349,707.96 = 548,310.26/x
  3. Step 3: Cross multiply
    978,002.30x = 1,349,707.96 × 548,310.26
  4. Step 4: Simplify right side
    978,002.30x = 740,058,726,531.33
  5. Step 5: Solve for x
    x = 740,058,726,531.33/978,002.30
  6. Step 6: Final answer
    x = 756,704.48

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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.