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Finding the Fourth Proportional to 542,832.70, 749,143.40 and 313,432.33

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Solution

The fourth proportional to 542,832.70, 749,143.40 and 313,432.33 is: 432,556.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,832.70 : 749,143.40 = 313,432.33 : x
  2. Step 2: Convert to fraction form
    542,832.70/749,143.40 = 313,432.33/x
  3. Step 3: Cross multiply
    542,832.70x = 749,143.40 × 313,432.33
  4. Step 4: Simplify right side
    542,832.70x = 234,805,761,366.12
  5. Step 5: Solve for x
    x = 234,805,761,366.12/542,832.70
  6. Step 6: Final answer
    x = 432,556.41

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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.