Home / 521,520,072.60-782,280,108.90-513,867,322.20

Finding the Fourth Proportional to 521,520,072.60, 782,280,108.90 and 513,867,322.20

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Solution

The fourth proportional to 521,520,072.60, 782,280,108.90 and 513,867,322.20 is: 770,800,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,072.60 : 782,280,108.90 = 513,867,322.20 : x
  2. Step 2: Convert to fraction form
    521,520,072.60/782,280,108.90 = 513,867,322.20/x
  3. Step 3: Cross multiply
    521,520,072.60x = 782,280,108.90 × 513,867,322.20
  4. Step 4: Simplify right side
    521,520,072.60x = 401,988,184,770,767,360
  5. Step 5: Solve for x
    x = 401,988,184,770,767,360/521,520,072.60
  6. Step 6: Final answer
    x = 770,800,983.30

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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.