Home / 778,380.91-1,074,141.28-456,305.51

Finding the Fourth Proportional to 778,380.91, 1,074,141.28 and 456,305.51

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Solution

The fourth proportional to 778,380.91, 1,074,141.28 and 456,305.51 is: 629,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,380.91 : 1,074,141.28 = 456,305.51 : x
  2. Step 2: Convert to fraction form
    778,380.91/1,074,141.28 = 456,305.51/x
  3. Step 3: Cross multiply
    778,380.91x = 1,074,141.28 × 456,305.51
  4. Step 4: Simplify right side
    778,380.91x = 490,136,587,838.19
  5. Step 5: Solve for x
    x = 490,136,587,838.19/778,380.91
  6. Step 6: Final answer
    x = 629,687.32

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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.