Home / 638,320.60-957,416.10-217,590.40

Finding the Fourth Proportional to 638,320.60, 957,416.10 and 217,590.40

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Solution

The fourth proportional to 638,320.60, 957,416.10 and 217,590.40 is: 326,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,320.60 : 957,416.10 = 217,590.40 : x
  2. Step 2: Convert to fraction form
    638,320.60/957,416.10 = 217,590.40/x
  3. Step 3: Cross multiply
    638,320.60x = 957,416.10 × 217,590.40
  4. Step 4: Simplify right side
    638,320.60x = 208,324,552,165.44
  5. Step 5: Solve for x
    x = 208,324,552,165.44/638,320.60
  6. Step 6: Final answer
    x = 326,363.51

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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.