Home / 521,520,778,884.70-782,281,168,327.05-518,214,790,711.90

Finding the Fourth Proportional to 521,520,778,884.70, 782,281,168,327.05 and 518,214,790,711.90

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Solution

The fourth proportional to 521,520,778,884.70, 782,281,168,327.05 and 518,214,790,711.90 is: 777,322,186,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,778,884.70 : 782,281,168,327.05 = 518,214,790,711.90 : x
  2. Step 2: Convert to fraction form
    521,520,778,884.70/782,281,168,327.05 = 518,214,790,711.90/x
  3. Step 3: Cross multiply
    521,520,778,884.70x = 782,281,168,327.05 × 518,214,790,711.90
  4. Step 4: Simplify right side
    521,520,778,884.70x = 405,389,671,922,462,902,714,368
  5. Step 5: Solve for x
    x = 405,389,671,922,462,902,714,368/521,520,778,884.70
  6. Step 6: Final answer
    x = 777,322,186,067.85

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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.