Home / 509,905,963.80-763,851,176.10-279,462,648.60

Finding the Fourth Proportional to 509,905,963.80, 763,851,176.10 and 279,462,648.60

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Solution

The fourth proportional to 509,905,963.80, 763,851,176.10 and 279,462,648.60 is: 418,641,647.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,905,963.80 : 763,851,176.10 = 279,462,648.60 : x
  2. Step 2: Convert to fraction form
    509,905,963.80/763,851,176.10 = 279,462,648.60/x
  3. Step 3: Cross multiply
    509,905,963.80x = 763,851,176.10 × 279,462,648.60
  4. Step 4: Simplify right side
    509,905,963.80x = 213,467,872,809,131,040
  5. Step 5: Solve for x
    x = 213,467,872,809,131,040/509,905,963.80
  6. Step 6: Final answer
    x = 418,641,647.61

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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.