Home / 917,172.38-1,366,460.82-872,001.12

Finding the Fourth Proportional to 917,172.38, 1,366,460.82 and 872,001.12

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Solution

The fourth proportional to 917,172.38, 1,366,460.82 and 872,001.12 is: 1,299,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,172.38 : 1,366,460.82 = 872,001.12 : x
  2. Step 2: Convert to fraction form
    917,172.38/1,366,460.82 = 872,001.12/x
  3. Step 3: Cross multiply
    917,172.38x = 1,366,460.82 × 872,001.12
  4. Step 4: Simplify right side
    917,172.38x = 1,191,555,365,476.12
  5. Step 5: Solve for x
    x = 1,191,555,365,476.12/917,172.38
  6. Step 6: Final answer
    x = 1,299,161.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.