Home / 1,171,523.12-1,755,278.40-639,417.56

Finding the Fourth Proportional to 1,171,523.12, 1,755,278.40 and 639,417.56

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Solution

The fourth proportional to 1,171,523.12, 1,755,278.40 and 639,417.56 is: 958,031.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,523.12 : 1,755,278.40 = 639,417.56 : x
  2. Step 2: Convert to fraction form
    1,171,523.12/1,755,278.40 = 639,417.56/x
  3. Step 3: Cross multiply
    1,171,523.12x = 1,755,278.40 × 639,417.56
  4. Step 4: Simplify right side
    1,171,523.12x = 1,122,355,831,648.70
  5. Step 5: Solve for x
    x = 1,122,355,831,648.70/1,171,523.12
  6. Step 6: Final answer
    x = 958,031.31

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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.