Home / 638,822.40-957,427.20-323,366.40

Finding the Fourth Proportional to 638,822.40, 957,427.20 and 323,366.40

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Solution

The fourth proportional to 638,822.40, 957,427.20 and 323,366.40 is: 484,641.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,822.40 : 957,427.20 = 323,366.40 : x
  2. Step 2: Convert to fraction form
    638,822.40/957,427.20 = 323,366.40/x
  3. Step 3: Cross multiply
    638,822.40x = 957,427.20 × 323,366.40
  4. Step 4: Simplify right side
    638,822.40x = 309,599,786,926.08
  5. Step 5: Solve for x
    x = 309,599,786,926.08/638,822.40
  6. Step 6: Final answer
    x = 484,641.41

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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.