Home / 1,115,150.72-1,538,568.96-631,639.04

Finding the Fourth Proportional to 1,115,150.72, 1,538,568.96 and 631,639.04

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Solution

The fourth proportional to 1,115,150.72, 1,538,568.96 and 631,639.04 is: 871,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,150.72 : 1,538,568.96 = 631,639.04 : x
  2. Step 2: Convert to fraction form
    1,115,150.72/1,538,568.96 = 631,639.04/x
  3. Step 3: Cross multiply
    1,115,150.72x = 1,538,568.96 × 631,639.04
  4. Step 4: Simplify right side
    1,115,150.72x = 971,820,220,868.20
  5. Step 5: Solve for x
    x = 971,820,220,868.20/1,115,150.72
  6. Step 6: Final answer
    x = 871,469.84

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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.