Home / 749,689.40-1,124,922.90-329,007.80

Finding the Fourth Proportional to 749,689.40, 1,124,922.90 and 329,007.80

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Solution

The fourth proportional to 749,689.40, 1,124,922.90 and 329,007.80 is: 493,682.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,689.40 : 1,124,922.90 = 329,007.80 : x
  2. Step 2: Convert to fraction form
    749,689.40/1,124,922.90 = 329,007.80/x
  3. Step 3: Cross multiply
    749,689.40x = 1,124,922.90 × 329,007.80
  4. Step 4: Simplify right side
    749,689.40x = 370,108,408,498.62
  5. Step 5: Solve for x
    x = 370,108,408,498.62/749,689.40
  6. Step 6: Final answer
    x = 493,682.33

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Double scale
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Similar ratio
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1.5x scale

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.