Home / 778,768.29-1,074,701.12-439,236.54

Finding the Fourth Proportional to 778,768.29, 1,074,701.12 and 439,236.54

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Solution

The fourth proportional to 778,768.29, 1,074,701.12 and 439,236.54 is: 606,146.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,768.29 : 1,074,701.12 = 439,236.54 : x
  2. Step 2: Convert to fraction form
    778,768.29/1,074,701.12 = 439,236.54/x
  3. Step 3: Cross multiply
    778,768.29x = 1,074,701.12 × 439,236.54
  4. Step 4: Simplify right side
    778,768.29x = 472,047,999,286.74
  5. Step 5: Solve for x
    x = 472,047,999,286.74/778,768.29
  6. Step 6: Final answer
    x = 606,146.92

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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.