Home / 1,115,116.88-1,538,892.77-631,681.88

Finding the Fourth Proportional to 1,115,116.88, 1,538,892.77 and 631,681.88

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Solution

The fourth proportional to 1,115,116.88, 1,538,892.77 and 631,681.88 is: 871,738.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,116.88 : 1,538,892.77 = 631,681.88 : x
  2. Step 2: Convert to fraction form
    1,115,116.88/1,538,892.77 = 631,681.88/x
  3. Step 3: Cross multiply
    1,115,116.88x = 1,538,892.77 × 631,681.88
  4. Step 4: Simplify right side
    1,115,116.88x = 972,090,667,219.13
  5. Step 5: Solve for x
    x = 972,090,667,219.13/1,115,116.88
  6. Step 6: Final answer
    x = 871,738.82

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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.