Home / 542,819.18-749,124.78-313,418.83

Finding the Fourth Proportional to 542,819.18, 749,124.78 and 313,418.83

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Solution

The fourth proportional to 542,819.18, 749,124.78 and 313,418.83 is: 432,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,819.18 : 749,124.78 = 313,418.83 : x
  2. Step 2: Convert to fraction form
    542,819.18/749,124.78 = 313,418.83/x
  3. Step 3: Cross multiply
    542,819.18x = 749,124.78 × 313,418.83
  4. Step 4: Simplify right side
    542,819.18x = 234,789,812,071.61
  5. Step 5: Solve for x
    x = 234,789,812,071.61/542,819.18
  6. Step 6: Final answer
    x = 432,537.80

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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.