Home / 643,182.90-887,646.92-356,795.25

Finding the Fourth Proportional to 643,182.90, 887,646.92 and 356,795.25

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Solution

The fourth proportional to 643,182.90, 887,646.92 and 356,795.25 is: 492,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,182.90 : 887,646.92 = 356,795.25 : x
  2. Step 2: Convert to fraction form
    643,182.90/887,646.92 = 356,795.25/x
  3. Step 3: Cross multiply
    643,182.90x = 887,646.92 × 356,795.25
  4. Step 4: Simplify right side
    643,182.90x = 316,708,202,949.15
  5. Step 5: Solve for x
    x = 316,708,202,949.15/643,182.90
  6. Step 6: Final answer
    x = 492,407.69

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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.