Home / 1,115,161.09-1,538,933.14-631,715.90

Finding the Fourth Proportional to 1,115,161.09, 1,538,933.14 and 631,715.90

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Solution

The fourth proportional to 1,115,161.09, 1,538,933.14 and 631,715.90 is: 871,774.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,161.09 : 1,538,933.14 = 631,715.90 : x
  2. Step 2: Convert to fraction form
    1,115,161.09/1,538,933.14 = 631,715.90/x
  3. Step 3: Cross multiply
    1,115,161.09x = 1,538,933.14 × 631,715.90
  4. Step 4: Simplify right side
    1,115,161.09x = 972,168,526,669.91
  5. Step 5: Solve for x
    x = 972,168,526,669.91/1,115,161.09
  6. Step 6: Final answer
    x = 871,774.08

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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.