Home / 813,703.20-1,122,976.97-451,240.76

Finding the Fourth Proportional to 813,703.20, 1,122,976.97 and 451,240.76

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Solution

The fourth proportional to 813,703.20, 1,122,976.97 and 451,240.76 is: 622,749.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,703.20 : 1,122,976.97 = 451,240.76 : x
  2. Step 2: Convert to fraction form
    813,703.20/1,122,976.97 = 451,240.76/x
  3. Step 3: Cross multiply
    813,703.20x = 1,122,976.97 × 451,240.76
  4. Step 4: Simplify right side
    813,703.20x = 506,732,973,534.21
  5. Step 5: Solve for x
    x = 506,732,973,534.21/813,703.20
  6. Step 6: Final answer
    x = 622,749.15

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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.