Home / 1,211,288.40-1,671,555.96-667,474.38

Finding the Fourth Proportional to 1,211,288.40, 1,671,555.96 and 667,474.38

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Solution

The fourth proportional to 1,211,288.40, 1,671,555.96 and 667,474.38 is: 921,102.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,288.40 : 1,671,555.96 = 667,474.38 : x
  2. Step 2: Convert to fraction form
    1,211,288.40/1,671,555.96 = 667,474.38/x
  3. Step 3: Cross multiply
    1,211,288.40x = 1,671,555.96 × 667,474.38
  4. Step 4: Simplify right side
    1,211,288.40x = 1,115,720,778,036.30
  5. Step 5: Solve for x
    x = 1,115,720,778,036.30/1,211,288.40
  6. Step 6: Final answer
    x = 921,102.50

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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.