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Finding the Fourth Proportional to 587,998.80, 879,924.60 and 409,669.20

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Solution

The fourth proportional to 587,998.80, 879,924.60 and 409,669.20 is: 613,059.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,998.80 : 879,924.60 = 409,669.20 : x
  2. Step 2: Convert to fraction form
    587,998.80/879,924.60 = 409,669.20/x
  3. Step 3: Cross multiply
    587,998.80x = 879,924.60 × 409,669.20
  4. Step 4: Simplify right side
    587,998.80x = 360,478,006,942.32
  5. Step 5: Solve for x
    x = 360,478,006,942.32/587,998.80
  6. Step 6: Final answer
    x = 613,059.09

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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.