Home / 921,026.76-1,380,012.78-560,105.80

Finding the Fourth Proportional to 921,026.76, 1,380,012.78 and 560,105.80

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Solution

The fourth proportional to 921,026.76, 1,380,012.78 and 560,105.80 is: 839,229.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,026.76 : 1,380,012.78 = 560,105.80 : x
  2. Step 2: Convert to fraction form
    921,026.76/1,380,012.78 = 560,105.80/x
  3. Step 3: Cross multiply
    921,026.76x = 1,380,012.78 × 560,105.80
  4. Step 4: Simplify right side
    921,026.76x = 772,953,162,152.12
  5. Step 5: Solve for x
    x = 772,953,162,152.12/921,026.76
  6. Step 6: Final answer
    x = 839,229.86

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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.