Home / 1,225,187.91-1,690,511.58-715,791.87

Finding the Fourth Proportional to 1,225,187.91, 1,690,511.58 and 715,791.87

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Solution

The fourth proportional to 1,225,187.91, 1,690,511.58 and 715,791.87 is: 987,648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,187.91 : 1,690,511.58 = 715,791.87 : x
  2. Step 2: Convert to fraction form
    1,225,187.91/1,690,511.58 = 715,791.87/x
  3. Step 3: Cross multiply
    1,225,187.91x = 1,690,511.58 × 715,791.87
  4. Step 4: Simplify right side
    1,225,187.91x = 1,210,054,445,104.85
  5. Step 5: Solve for x
    x = 1,210,054,445,104.85/1,225,187.91
  6. Step 6: Final answer
    x = 987,648.05

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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.