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Finding the Fourth Proportional to 661,247.54, 993,034.20 and 651,781.34

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Solution

The fourth proportional to 661,247.54, 993,034.20 and 651,781.34 is: 978,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,247.54 : 993,034.20 = 651,781.34 : x
  2. Step 2: Convert to fraction form
    661,247.54/993,034.20 = 651,781.34/x
  3. Step 3: Cross multiply
    661,247.54x = 993,034.20 × 651,781.34
  4. Step 4: Simplify right side
    661,247.54x = 647,241,161,541.83
  5. Step 5: Solve for x
    x = 647,241,161,541.83/661,247.54
  6. Step 6: Final answer
    x = 978,818.25

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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.