Home / 1,115,151.72-1,538,570.34-631,640.04

Finding the Fourth Proportional to 1,115,151.72, 1,538,570.34 and 631,640.04

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Solution

The fourth proportional to 1,115,151.72, 1,538,570.34 and 631,640.04 is: 871,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,151.72 : 1,538,570.34 = 631,640.04 : x
  2. Step 2: Convert to fraction form
    1,115,151.72/1,538,570.34 = 631,640.04/x
  3. Step 3: Cross multiply
    1,115,151.72x = 1,538,570.34 × 631,640.04
  4. Step 4: Simplify right side
    1,115,151.72x = 971,822,631,100.41
  5. Step 5: Solve for x
    x = 971,822,631,100.41/1,115,151.72
  6. Step 6: Final answer
    x = 871,471.22

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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.