Home / 1,207,515.87-1,665,706.28-980,767.71

Finding the Fourth Proportional to 1,207,515.87, 1,665,706.28 and 980,767.71

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Solution

The fourth proportional to 1,207,515.87, 1,665,706.28 and 980,767.71 is: 1,352,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,515.87 : 1,665,706.28 = 980,767.71 : x
  2. Step 2: Convert to fraction form
    1,207,515.87/1,665,706.28 = 980,767.71/x
  3. Step 3: Cross multiply
    1,207,515.87x = 1,665,706.28 × 980,767.71
  4. Step 4: Simplify right side
    1,207,515.87x = 1,633,670,928,864.38
  5. Step 5: Solve for x
    x = 1,633,670,928,864.38/1,207,515.87
  6. Step 6: Final answer
    x = 1,352,918.81

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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.