Home / 521,520,776,747.70-782,281,165,121.55-186,513,975,237.30

Finding the Fourth Proportional to 521,520,776,747.70, 782,281,165,121.55 and 186,513,975,237.30

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Solution

The fourth proportional to 521,520,776,747.70, 782,281,165,121.55 and 186,513,975,237.30 is: 279,770,962,855.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,776,747.70 : 782,281,165,121.55 = 186,513,975,237.30 : x
  2. Step 2: Convert to fraction form
    521,520,776,747.70/782,281,165,121.55 = 186,513,975,237.30/x
  3. Step 3: Cross multiply
    521,520,776,747.70x = 782,281,165,121.55 × 186,513,975,237.30
  4. Step 4: Simplify right side
    521,520,776,747.70x = 145,906,369,860,086,970,449,920
  5. Step 5: Solve for x
    x = 145,906,369,860,086,970,449,920/521,520,776,747.70
  6. Step 6: Final answer
    x = 279,770,962,855.95

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Double scale
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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.