Home / 778,486.14-1,074,286.40-456,410.70

Finding the Fourth Proportional to 778,486.14, 1,074,286.40 and 456,410.70

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Solution

The fourth proportional to 778,486.14, 1,074,286.40 and 456,410.70 is: 629,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,486.14 : 1,074,286.40 = 456,410.70 : x
  2. Step 2: Convert to fraction form
    778,486.14/1,074,286.40 = 456,410.70/x
  3. Step 3: Cross multiply
    778,486.14x = 1,074,286.40 × 456,410.70
  4. Step 4: Simplify right side
    778,486.14x = 490,315,805,542.43
  5. Step 5: Solve for x
    x = 490,315,805,542.43/778,486.14
  6. Step 6: Final answer
    x = 629,832.41

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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.