Home / 765,993.11-1,148,397.55-386,718.60

Finding the Fourth Proportional to 765,993.11, 1,148,397.55 and 386,718.60

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Solution

The fourth proportional to 765,993.11, 1,148,397.55 and 386,718.60 is: 579,778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,993.11 : 1,148,397.55 = 386,718.60 : x
  2. Step 2: Convert to fraction form
    765,993.11/1,148,397.55 = 386,718.60/x
  3. Step 3: Cross multiply
    765,993.11x = 1,148,397.55 × 386,718.60
  4. Step 4: Simplify right side
    765,993.11x = 444,106,696,119.12
  5. Step 5: Solve for x
    x = 444,106,696,119.12/765,993.11
  6. Step 6: Final answer
    x = 579,778.97

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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.