Home / 766,449.34-1,057,657.68-422,217.60

Finding the Fourth Proportional to 766,449.34, 1,057,657.68 and 422,217.60

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Solution

The fourth proportional to 766,449.34, 1,057,657.68 and 422,217.60 is: 582,636.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,449.34 : 1,057,657.68 = 422,217.60 : x
  2. Step 2: Convert to fraction form
    766,449.34/1,057,657.68 = 422,217.60/x
  3. Step 3: Cross multiply
    766,449.34x = 1,057,657.68 × 422,217.60
  4. Step 4: Simplify right side
    766,449.34x = 446,561,687,271.17
  5. Step 5: Solve for x
    x = 446,561,687,271.17/766,449.34
  6. Step 6: Final answer
    x = 582,636.93

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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.