Home / 1,315,217.20-1,972,825.80-866,444.80

Finding the Fourth Proportional to 1,315,217.20, 1,972,825.80 and 866,444.80

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Solution

The fourth proportional to 1,315,217.20, 1,972,825.80 and 866,444.80 is: 1,299,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,217.20 : 1,972,825.80 = 866,444.80 : x
  2. Step 2: Convert to fraction form
    1,315,217.20/1,972,825.80 = 866,444.80/x
  3. Step 3: Cross multiply
    1,315,217.20x = 1,972,825.80 × 866,444.80
  4. Step 4: Simplify right side
    1,315,217.20x = 1,709,344,655,715.84
  5. Step 5: Solve for x
    x = 1,709,344,655,715.84/1,315,217.20
  6. Step 6: Final answer
    x = 1,299,667.20

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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.