Home / 812,922.15-1,121,901.49-450,459.71

Finding the Fourth Proportional to 812,922.15, 1,121,901.49 and 450,459.71

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Solution

The fourth proportional to 812,922.15, 1,121,901.49 and 450,459.71 is: 621,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,922.15 : 1,121,901.49 = 450,459.71 : x
  2. Step 2: Convert to fraction form
    812,922.15/1,121,901.49 = 450,459.71/x
  3. Step 3: Cross multiply
    812,922.15x = 1,121,901.49 × 450,459.71
  4. Step 4: Simplify right side
    812,922.15x = 505,371,417,581.67
  5. Step 5: Solve for x
    x = 505,371,417,581.67/812,922.15
  6. Step 6: Final answer
    x = 621,672.59

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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.