Home / 778,964.76-1,074,974.62-421,268.76

Finding the Fourth Proportional to 778,964.76, 1,074,974.62 and 421,268.76

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Solution

The fourth proportional to 778,964.76, 1,074,974.62 and 421,268.76 is: 581,352.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,964.76 : 1,074,974.62 = 421,268.76 : x
  2. Step 2: Convert to fraction form
    778,964.76/1,074,974.62 = 421,268.76/x
  3. Step 3: Cross multiply
    778,964.76x = 1,074,974.62 × 421,268.76
  4. Step 4: Simplify right side
    778,964.76x = 452,853,225,198.87
  5. Step 5: Solve for x
    x = 452,853,225,198.87/778,964.76
  6. Step 6: Final answer
    x = 581,352.65

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Double scale
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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.