Home / 1,115,151.22-1,538,569.65-631,639.54

Finding the Fourth Proportional to 1,115,151.22, 1,538,569.65 and 631,639.54

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Solution

The fourth proportional to 1,115,151.22, 1,538,569.65 and 631,639.54 is: 871,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,151.22 : 1,538,569.65 = 631,639.54 : x
  2. Step 2: Convert to fraction form
    1,115,151.22/1,538,569.65 = 631,639.54/x
  3. Step 3: Cross multiply
    1,115,151.22x = 1,538,569.65 × 631,639.54
  4. Step 4: Simplify right side
    1,115,151.22x = 971,821,425,983.96
  5. Step 5: Solve for x
    x = 971,821,425,983.96/1,115,151.22
  6. Step 6: Final answer
    x = 871,470.53

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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.