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Finding the Fourth Proportional to 552,887.75, 763,058.40 and 311,217.23

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Solution

The fourth proportional to 552,887.75, 763,058.40 and 311,217.23 is: 429,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,887.75 : 763,058.40 = 311,217.23 : x
  2. Step 2: Convert to fraction form
    552,887.75/763,058.40 = 311,217.23/x
  3. Step 3: Cross multiply
    552,887.75x = 763,058.40 × 311,217.23
  4. Step 4: Simplify right side
    552,887.75x = 237,476,921,576.23
  5. Step 5: Solve for x
    x = 237,476,921,576.23/552,887.75
  6. Step 6: Final answer
    x = 429,521.04

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1.5x scale

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.