Home / 509,607,844.40-764,411,766.60-279,488,010.80

Finding the Fourth Proportional to 509,607,844.40, 764,411,766.60 and 279,488,010.80

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Solution

The fourth proportional to 509,607,844.40, 764,411,766.60 and 279,488,010.80 is: 419,232,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,607,844.40 : 764,411,766.60 = 279,488,010.80 : x
  2. Step 2: Convert to fraction form
    509,607,844.40/764,411,766.60 = 279,488,010.80/x
  3. Step 3: Cross multiply
    509,607,844.40x = 764,411,766.60 × 279,488,010.80
  4. Step 4: Simplify right side
    509,607,844.40x = 213,643,924,079,147,904
  5. Step 5: Solve for x
    x = 213,643,924,079,147,904/509,607,844.40
  6. Step 6: Final answer
    x = 419,232,016.20

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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.