Home / 778,540.34-1,074,385.86-439,008.68

Finding the Fourth Proportional to 778,540.34, 1,074,385.86 and 439,008.68

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Solution

The fourth proportional to 778,540.34, 1,074,385.86 and 439,008.68 is: 605,832.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,540.34 : 1,074,385.86 = 439,008.68 : x
  2. Step 2: Convert to fraction form
    778,540.34/1,074,385.86 = 439,008.68/x
  3. Step 3: Cross multiply
    778,540.34x = 1,074,385.86 × 439,008.68
  4. Step 4: Simplify right side
    778,540.34x = 471,664,718,209.27
  5. Step 5: Solve for x
    x = 471,664,718,209.27/778,540.34
  6. Step 6: Final answer
    x = 605,832.09

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1.5x scale

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.