Home / 821,520.60-1,133,657.76-458,872.20

Finding the Fourth Proportional to 821,520.60, 1,133,657.76 and 458,872.20

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Solution

The fourth proportional to 821,520.60, 1,133,657.76 and 458,872.20 is: 633,220.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,520.60 : 1,133,657.76 = 458,872.20 : x
  2. Step 2: Convert to fraction form
    821,520.60/1,133,657.76 = 458,872.20/x
  3. Step 3: Cross multiply
    821,520.60x = 1,133,657.76 × 458,872.20
  4. Step 4: Simplify right side
    821,520.60x = 520,204,030,378.27
  5. Step 5: Solve for x
    x = 520,204,030,378.27/821,520.60
  6. Step 6: Final answer
    x = 633,220.92

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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.