Home / 812,984.31-1,219,036.64-645,581.61

Finding the Fourth Proportional to 812,984.31, 1,219,036.64 and 645,581.61

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Solution

The fourth proportional to 812,984.31, 1,219,036.64 and 645,581.61 is: 968,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,984.31 : 1,219,036.64 = 645,581.61 : x
  2. Step 2: Convert to fraction form
    812,984.31/1,219,036.64 = 645,581.61/x
  3. Step 3: Cross multiply
    812,984.31x = 1,219,036.64 × 645,581.61
  4. Step 4: Simplify right side
    812,984.31x = 786,987,633,472.28
  5. Step 5: Solve for x
    x = 786,987,633,472.28/812,984.31
  6. Step 6: Final answer
    x = 968,023.15

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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.