Home / 813,682.96-1,122,948.72-451,220.32

Finding the Fourth Proportional to 813,682.96, 1,122,948.72 and 451,220.32

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Solution

The fourth proportional to 813,682.96, 1,122,948.72 and 451,220.32 is: 622,720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,682.96 : 1,122,948.72 = 451,220.32 : x
  2. Step 2: Convert to fraction form
    813,682.96/1,122,948.72 = 451,220.32/x
  3. Step 3: Cross multiply
    813,682.96x = 1,122,948.72 × 451,220.32
  4. Step 4: Simplify right side
    813,682.96x = 506,697,280,781.99
  5. Step 5: Solve for x
    x = 506,697,280,781.99/813,682.96
  6. Step 6: Final answer
    x = 622,720.77

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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.