Home / 778,078.20-1,165,805.10-644,233.80

Finding the Fourth Proportional to 778,078.20, 1,165,805.10 and 644,233.80

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Solution

The fourth proportional to 778,078.20, 1,165,805.10 and 644,233.80 is: 965,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,078.20 : 1,165,805.10 = 644,233.80 : x
  2. Step 2: Convert to fraction form
    778,078.20/1,165,805.10 = 644,233.80/x
  3. Step 3: Cross multiply
    778,078.20x = 1,165,805.10 × 644,233.80
  4. Step 4: Simplify right side
    778,078.20x = 751,051,049,632.38
  5. Step 5: Solve for x
    x = 751,051,049,632.38/778,078.20
  6. Step 6: Final answer
    x = 965,264.22

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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.