Home / 765,261.27-1,148,335.47-386,211.65

Finding the Fourth Proportional to 765,261.27, 1,148,335.47 and 386,211.65

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Solution

The fourth proportional to 765,261.27, 1,148,335.47 and 386,211.65 is: 579,541.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,261.27 : 1,148,335.47 = 386,211.65 : x
  2. Step 2: Convert to fraction form
    765,261.27/1,148,335.47 = 386,211.65/x
  3. Step 3: Cross multiply
    765,261.27x = 1,148,335.47 × 386,211.65
  4. Step 4: Simplify right side
    765,261.27x = 443,500,530,880.55
  5. Step 5: Solve for x
    x = 443,500,530,880.55/765,261.27
  6. Step 6: Final answer
    x = 579,541.33

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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.