Home / 1,261,865-1,891,864.38-763,118.12

Finding the Fourth Proportional to 1,261,865, 1,891,864.38 and 763,118.12

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Solution

The fourth proportional to 1,261,865, 1,891,864.38 and 763,118.12 is: 1,144,112.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,865 : 1,891,864.38 = 763,118.12 : x
  2. Step 2: Convert to fraction form
    1,261,865/1,891,864.38 = 763,118.12/x
  3. Step 3: Cross multiply
    1,261,865x = 1,891,864.38 × 763,118.12
  4. Step 4: Simplify right side
    1,261,865x = 1,443,715,988,960.57
  5. Step 5: Solve for x
    x = 1,443,715,988,960.57/1,261,865
  6. Step 6: Final answer
    x = 1,144,112.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.