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Finding the Fourth Proportional to 507,311.10, 700,087.86 and 280,956.60

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Solution

The fourth proportional to 507,311.10, 700,087.86 and 280,956.60 is: 387,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,311.10 : 700,087.86 = 280,956.60 : x
  2. Step 2: Convert to fraction form
    507,311.10/700,087.86 = 280,956.60/x
  3. Step 3: Cross multiply
    507,311.10x = 700,087.86 × 280,956.60
  4. Step 4: Simplify right side
    507,311.10x = 196,694,304,846.88
  5. Step 5: Solve for x
    x = 196,694,304,846.88/507,311.10
  6. Step 6: Final answer
    x = 387,719.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.