Home / 709,513.22-979,151.09-403,581.74

Finding the Fourth Proportional to 709,513.22, 979,151.09 and 403,581.74

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Solution

The fourth proportional to 709,513.22, 979,151.09 and 403,581.74 is: 556,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,513.22 : 979,151.09 = 403,581.74 : x
  2. Step 2: Convert to fraction form
    709,513.22/979,151.09 = 403,581.74/x
  3. Step 3: Cross multiply
    709,513.22x = 979,151.09 × 403,581.74
  4. Step 4: Simplify right side
    709,513.22x = 395,167,493,711.43
  5. Step 5: Solve for x
    x = 395,167,493,711.43/709,513.22
  6. Step 6: Final answer
    x = 556,955.78

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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.