Home / 991,964.97-1,367,626.78-642,483.59

Finding the Fourth Proportional to 991,964.97, 1,367,626.78 and 642,483.59

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Solution

The fourth proportional to 991,964.97, 1,367,626.78 and 642,483.59 is: 885,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,964.97 : 1,367,626.78 = 642,483.59 : x
  2. Step 2: Convert to fraction form
    991,964.97/1,367,626.78 = 642,483.59/x
  3. Step 3: Cross multiply
    991,964.97x = 1,367,626.78 × 642,483.59
  4. Step 4: Simplify right side
    991,964.97x = 878,677,754,950.20
  5. Step 5: Solve for x
    x = 878,677,754,950.20/991,964.97
  6. Step 6: Final answer
    x = 885,795.15

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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.