Home / 1,217,455.75-1,680,062.92-666,169.32

Finding the Fourth Proportional to 1,217,455.75, 1,680,062.92 and 666,169.32

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Solution

The fourth proportional to 1,217,455.75, 1,680,062.92 and 666,169.32 is: 919,299.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,455.75 : 1,680,062.92 = 666,169.32 : x
  2. Step 2: Convert to fraction form
    1,217,455.75/1,680,062.92 = 666,169.32/x
  3. Step 3: Cross multiply
    1,217,455.75x = 1,680,062.92 × 666,169.32
  4. Step 4: Simplify right side
    1,217,455.75x = 1,119,206,368,773.46
  5. Step 5: Solve for x
    x = 1,119,206,368,773.46/1,217,455.75
  6. Step 6: Final answer
    x = 919,299.43

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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.