Home / 648,430.29-894,815.19-361,944.21

Finding the Fourth Proportional to 648,430.29, 894,815.19 and 361,944.21

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Solution

The fourth proportional to 648,430.29, 894,815.19 and 361,944.21 is: 499,472.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,430.29 : 894,815.19 = 361,944.21 : x
  2. Step 2: Convert to fraction form
    648,430.29/894,815.19 = 361,944.21/x
  3. Step 3: Cross multiply
    648,430.29x = 894,815.19 × 361,944.21
  4. Step 4: Simplify right side
    648,430.29x = 323,873,177,040.55
  5. Step 5: Solve for x
    x = 323,873,177,040.55/648,430.29
  6. Step 6: Final answer
    x = 499,472.62

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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.