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Finding the Fourth Proportional to 533,999.70, 800,999.55 and 280,934.10

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Solution

The fourth proportional to 533,999.70, 800,999.55 and 280,934.10 is: 421,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,999.70 : 800,999.55 = 280,934.10 : x
  2. Step 2: Convert to fraction form
    533,999.70/800,999.55 = 280,934.10/x
  3. Step 3: Cross multiply
    533,999.70x = 800,999.55 × 280,934.10
  4. Step 4: Simplify right side
    533,999.70x = 225,028,087,679.66
  5. Step 5: Solve for x
    x = 225,028,087,679.66/533,999.70
  6. Step 6: Final answer
    x = 421,401.15

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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.