Home / 638,309.96-957,254.14-211,747.72

Finding the Fourth Proportional to 638,309.96, 957,254.14 and 211,747.72

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Solution

The fourth proportional to 638,309.96, 957,254.14 and 211,747.72 is: 317,551.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,309.96 : 957,254.14 = 211,747.72 : x
  2. Step 2: Convert to fraction form
    638,309.96/957,254.14 = 211,747.72/x
  3. Step 3: Cross multiply
    638,309.96x = 957,254.14 × 211,747.72
  4. Step 4: Simplify right side
    638,309.96x = 202,696,381,605.56
  5. Step 5: Solve for x
    x = 202,696,381,605.56/638,309.96
  6. Step 6: Final answer
    x = 317,551.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.