Home / 787,508,980.40-1,181,515,822.68-551,404,442

Finding the Fourth Proportional to 787,508,980.40, 1,181,515,822.68 and 551,404,442

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Solution

The fourth proportional to 787,508,980.40, 1,181,515,822.68 and 551,404,442 is: 827,283,356.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,508,980.40 : 1,181,515,822.68 = 551,404,442 : x
  2. Step 2: Convert to fraction form
    787,508,980.40/1,181,515,822.68 = 551,404,442/x
  3. Step 3: Cross multiply
    787,508,980.40x = 1,181,515,822.68 × 551,404,442
  4. Step 4: Simplify right side
    787,508,980.40x = 651,493,072,919,036,416
  5. Step 5: Solve for x
    x = 651,493,072,919,036,416/787,508,980.40
  6. Step 6: Final answer
    x = 827,283,356.93

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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.