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Finding the Fourth Proportional to 533,905.70, 800,858.55 and 280,840.10

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Solution

The fourth proportional to 533,905.70, 800,858.55 and 280,840.10 is: 421,260.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,905.70 : 800,858.55 = 280,840.10 : x
  2. Step 2: Convert to fraction form
    533,905.70/800,858.55 = 280,840.10/x
  3. Step 3: Cross multiply
    533,905.70x = 800,858.55 × 280,840.10
  4. Step 4: Simplify right side
    533,905.70x = 224,913,195,267.86
  5. Step 5: Solve for x
    x = 224,913,195,267.86/533,905.70
  6. Step 6: Final answer
    x = 421,260.15

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Similar ratio
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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.