Home / 1,211,653.64-1,672,013.80-667,787.76

Finding the Fourth Proportional to 1,211,653.64, 1,672,013.80 and 667,787.76

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Solution

The fourth proportional to 1,211,653.64, 1,672,013.80 and 667,787.76 is: 921,509.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,653.64 : 1,672,013.80 = 667,787.76 : x
  2. Step 2: Convert to fraction form
    1,211,653.64/1,672,013.80 = 667,787.76/x
  3. Step 3: Cross multiply
    1,211,653.64x = 1,672,013.80 × 667,787.76
  4. Step 4: Simplify right side
    1,211,653.64x = 1,116,550,350,191.09
  5. Step 5: Solve for x
    x = 1,116,550,350,191.09/1,211,653.64
  6. Step 6: Final answer
    x = 921,509.51

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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.