Home / 1,111,329.06-1,667,001.87-312,691.38

Finding the Fourth Proportional to 1,111,329.06, 1,667,001.87 and 312,691.38

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Solution

The fourth proportional to 1,111,329.06, 1,667,001.87 and 312,691.38 is: 469,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,329.06 : 1,667,001.87 = 312,691.38 : x
  2. Step 2: Convert to fraction form
    1,111,329.06/1,667,001.87 = 312,691.38/x
  3. Step 3: Cross multiply
    1,111,329.06x = 1,667,001.87 × 312,691.38
  4. Step 4: Simplify right side
    1,111,329.06x = 521,257,115,192.88
  5. Step 5: Solve for x
    x = 521,257,115,192.88/1,111,329.06
  6. Step 6: Final answer
    x = 469,039.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.