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Finding the Fourth Proportional to 1,432,205.07, 1,976,397.75 and 787,623.27

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Solution

The fourth proportional to 1,432,205.07, 1,976,397.75 and 787,623.27 is: 1,086,895.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,205.07 : 1,976,397.75 = 787,623.27 : x
  2. Step 2: Convert to fraction form
    1,432,205.07/1,976,397.75 = 787,623.27/x
  3. Step 3: Cross multiply
    1,432,205.07x = 1,976,397.75 × 787,623.27
  4. Step 4: Simplify right side
    1,432,205.07x = 1,556,656,858,675.64
  5. Step 5: Solve for x
    x = 1,556,656,858,675.64/1,432,205.07
  6. Step 6: Final answer
    x = 1,086,895.23

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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.