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Finding the Fourth Proportional to 483,672.76, 725,508.20 and 128,686.77

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Solution

The fourth proportional to 483,672.76, 725,508.20 and 128,686.77 is: 193,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,672.76 : 725,508.20 = 128,686.77 : x
  2. Step 2: Convert to fraction form
    483,672.76/725,508.20 = 128,686.77/x
  3. Step 3: Cross multiply
    483,672.76x = 725,508.20 × 128,686.77
  4. Step 4: Simplify right side
    483,672.76x = 93,363,307,188.23
  5. Step 5: Solve for x
    x = 93,363,307,188.23/483,672.76
  6. Step 6: Final answer
    x = 193,029.91

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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.