Home / 399,402,514.80-599,103,772.20-261,653,007.60

Finding the Fourth Proportional to 399,402,514.80, 599,103,772.20 and 261,653,007.60

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Solution

The fourth proportional to 399,402,514.80, 599,103,772.20 and 261,653,007.60 is: 392,479,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,402,514.80 : 599,103,772.20 = 261,653,007.60 : x
  2. Step 2: Convert to fraction form
    399,402,514.80/599,103,772.20 = 261,653,007.60/x
  3. Step 3: Cross multiply
    399,402,514.80x = 599,103,772.20 × 261,653,007.60
  4. Step 4: Simplify right side
    399,402,514.80x = 156,757,303,860,635,264
  5. Step 5: Solve for x
    x = 156,757,303,860,635,264/399,402,514.80
  6. Step 6: Final answer
    x = 392,479,511.40

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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.