Home / 812,127.60-1,120,722.48-449,543.66

Finding the Fourth Proportional to 812,127.60, 1,120,722.48 and 449,543.66

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Solution

The fourth proportional to 812,127.60, 1,120,722.48 and 449,543.66 is: 620,362.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,127.60 : 1,120,722.48 = 449,543.66 : x
  2. Step 2: Convert to fraction form
    812,127.60/1,120,722.48 = 449,543.66/x
  3. Step 3: Cross multiply
    812,127.60x = 1,120,722.48 × 449,543.66
  4. Step 4: Simplify right side
    812,127.60x = 503,813,679,899.86
  5. Step 5: Solve for x
    x = 503,813,679,899.86/812,127.60
  6. Step 6: Final answer
    x = 620,362.71

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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.