Home / 492,884.09-680,248.13-288,985.22

Finding the Fourth Proportional to 492,884.09, 680,248.13 and 288,985.22

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Solution

The fourth proportional to 492,884.09, 680,248.13 and 288,985.22 is: 398,839.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,884.09 : 680,248.13 = 288,985.22 : x
  2. Step 2: Convert to fraction form
    492,884.09/680,248.13 = 288,985.22/x
  3. Step 3: Cross multiply
    492,884.09x = 680,248.13 × 288,985.22
  4. Step 4: Simplify right side
    492,884.09x = 196,581,650,656.47
  5. Step 5: Solve for x
    x = 196,581,650,656.47/492,884.09
  6. Step 6: Final answer
    x = 398,839.52

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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.