Home / 1,438,506.28-2,155,955.13-762,920.11

Finding the Fourth Proportional to 1,438,506.28, 2,155,955.13 and 762,920.11

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Solution

The fourth proportional to 1,438,506.28, 2,155,955.13 and 762,920.11 is: 1,143,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,506.28 : 2,155,955.13 = 762,920.11 : x
  2. Step 2: Convert to fraction form
    1,438,506.28/2,155,955.13 = 762,920.11/x
  3. Step 3: Cross multiply
    1,438,506.28x = 2,155,955.13 × 762,920.11
  4. Step 4: Simplify right side
    1,438,506.28x = 1,644,821,524,934.66
  5. Step 5: Solve for x
    x = 1,644,821,524,934.66/1,438,506.28
  6. Step 6: Final answer
    x = 1,143,423.25

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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.