Home / 665,280.20-998,066.10-215,924.60

Finding the Fourth Proportional to 665,280.20, 998,066.10 and 215,924.60

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Solution

The fourth proportional to 665,280.20, 998,066.10 and 215,924.60 is: 323,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,280.20 : 998,066.10 = 215,924.60 : x
  2. Step 2: Convert to fraction form
    665,280.20/998,066.10 = 215,924.60/x
  3. Step 3: Cross multiply
    665,280.20x = 998,066.10 × 215,924.60
  4. Step 4: Simplify right side
    665,280.20x = 215,507,023,416.06
  5. Step 5: Solve for x
    x = 215,507,023,416.06/665,280.20
  6. Step 6: Final answer
    x = 323,934.22

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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.