Home / 1,215,731.91-1,677,748.62-664,435.52

Finding the Fourth Proportional to 1,215,731.91, 1,677,748.62 and 664,435.52

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Solution

The fourth proportional to 1,215,731.91, 1,677,748.62 and 664,435.52 is: 916,942.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,731.91 : 1,677,748.62 = 664,435.52 : x
  2. Step 2: Convert to fraction form
    1,215,731.91/1,677,748.62 = 664,435.52/x
  3. Step 3: Cross multiply
    1,215,731.91x = 1,677,748.62 × 664,435.52
  4. Step 4: Simplify right side
    1,215,731.91x = 1,114,755,776,758.98
  5. Step 5: Solve for x
    x = 1,114,755,776,758.98/1,215,731.91
  6. Step 6: Final answer
    x = 916,942.11

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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.