Home / 778,493.64-1,074,296.73-456,418.20

Finding the Fourth Proportional to 778,493.64, 1,074,296.73 and 456,418.20

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Solution

The fourth proportional to 778,493.64, 1,074,296.73 and 456,418.20 is: 629,842.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,493.64 : 1,074,296.73 = 456,418.20 : x
  2. Step 2: Convert to fraction form
    778,493.64/1,074,296.73 = 456,418.20/x
  3. Step 3: Cross multiply
    778,493.64x = 1,074,296.73 × 456,418.20
  4. Step 4: Simplify right side
    778,493.64x = 490,328,579,772.49
  5. Step 5: Solve for x
    x = 490,328,579,772.49/778,493.64
  6. Step 6: Final answer
    x = 629,842.76

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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.