Home / 634,581.60-875,481.12-405,147.60

Finding the Fourth Proportional to 634,581.60, 875,481.12 and 405,147.60

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Solution

The fourth proportional to 634,581.60, 875,481.12 and 405,147.60 is: 558,949.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,581.60 : 875,481.12 = 405,147.60 : x
  2. Step 2: Convert to fraction form
    634,581.60/875,481.12 = 405,147.60/x
  3. Step 3: Cross multiply
    634,581.60x = 875,481.12 × 405,147.60
  4. Step 4: Simplify right side
    634,581.60x = 354,699,074,613.31
  5. Step 5: Solve for x
    x = 354,699,074,613.31/634,581.60
  6. Step 6: Final answer
    x = 558,949.51

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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.