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Finding the Fourth Proportional to 890,002.80, 1,334,874.60 and 258,850.80

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Solution

The fourth proportional to 890,002.80, 1,334,874.60 and 258,850.80 is: 388,238.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,002.80 : 1,334,874.60 = 258,850.80 : x
  2. Step 2: Convert to fraction form
    890,002.80/1,334,874.60 = 258,850.80/x
  3. Step 3: Cross multiply
    890,002.80x = 1,334,874.60 × 258,850.80
  4. Step 4: Simplify right side
    890,002.80x = 345,533,358,109.68
  5. Step 5: Solve for x
    x = 345,533,358,109.68/890,002.80
  6. Step 6: Final answer
    x = 388,238.51

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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.