Home / 820,095.45-1,230,143.18-503,525.85

Finding the Fourth Proportional to 820,095.45, 1,230,143.18 and 503,525.85

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Solution

The fourth proportional to 820,095.45, 1,230,143.18 and 503,525.85 is: 755,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,095.45 : 1,230,143.18 = 503,525.85 : x
  2. Step 2: Convert to fraction form
    820,095.45/1,230,143.18 = 503,525.85/x
  3. Step 3: Cross multiply
    820,095.45x = 1,230,143.18 × 503,525.85
  4. Step 4: Simplify right side
    820,095.45x = 619,408,887,813.57
  5. Step 5: Solve for x
    x = 619,408,887,813.57/820,095.45
  6. Step 6: Final answer
    x = 755,288.78

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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.