Home / 765,991.28-1,148,394.88-386,716.77

Finding the Fourth Proportional to 765,991.28, 1,148,394.88 and 386,716.77

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Solution

The fourth proportional to 765,991.28, 1,148,394.88 and 386,716.77 is: 579,776.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,991.28 : 1,148,394.88 = 386,716.77 : x
  2. Step 2: Convert to fraction form
    765,991.28/1,148,394.88 = 386,716.77/x
  3. Step 3: Cross multiply
    765,991.28x = 1,148,394.88 × 386,716.77
  4. Step 4: Simplify right side
    765,991.28x = 444,103,557,711.35
  5. Step 5: Solve for x
    x = 444,103,557,711.35/765,991.28
  6. Step 6: Final answer
    x = 579,776.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.