Home / 399,402,515.80-599,103,773.70-261,653,008.60

Finding the Fourth Proportional to 399,402,515.80, 599,103,773.70 and 261,653,008.60

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Solution

The fourth proportional to 399,402,515.80, 599,103,773.70 and 261,653,008.60 is: 392,479,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,402,515.80 : 599,103,773.70 = 261,653,008.60 : x
  2. Step 2: Convert to fraction form
    399,402,515.80/599,103,773.70 = 261,653,008.60/x
  3. Step 3: Cross multiply
    399,402,515.80x = 599,103,773.70 × 261,653,008.60
  4. Step 4: Simplify right side
    399,402,515.80x = 156,757,304,852,218,560
  5. Step 5: Solve for x
    x = 156,757,304,852,218,560/399,402,515.80
  6. Step 6: Final answer
    x = 392,479,512.90

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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.