Home / 2,139,039.56-2,951,874.63-1,172,207.90

Finding the Fourth Proportional to 2,139,039.56, 2,951,874.63 and 1,172,207.90

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Solution

The fourth proportional to 2,139,039.56, 2,951,874.63 and 1,172,207.90 is: 1,617,646.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,039.56 : 2,951,874.63 = 1,172,207.90 : x
  2. Step 2: Convert to fraction form
    2,139,039.56/2,951,874.63 = 1,172,207.90/x
  3. Step 3: Cross multiply
    2,139,039.56x = 2,951,874.63 × 1,172,207.90
  4. Step 4: Simplify right side
    2,139,039.56x = 3,460,210,768,475.26
  5. Step 5: Solve for x
    x = 3,460,210,768,475.26/2,139,039.56
  6. Step 6: Final answer
    x = 1,617,646.92

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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.