Home / 442,367,999.20-663,551,998.80-395,786,648.80

Finding the Fourth Proportional to 442,367,999.20, 663,551,998.80 and 395,786,648.80

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Solution

The fourth proportional to 442,367,999.20, 663,551,998.80 and 395,786,648.80 is: 593,679,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,367,999.20 : 663,551,998.80 = 395,786,648.80 : x
  2. Step 2: Convert to fraction form
    442,367,999.20/663,551,998.80 = 395,786,648.80/x
  3. Step 3: Cross multiply
    442,367,999.20x = 663,551,998.80 × 395,786,648.80
  4. Step 4: Simplify right side
    442,367,999.20x = 262,625,021,909,593,600
  5. Step 5: Solve for x
    x = 262,625,021,909,593,600/442,367,999.20
  6. Step 6: Final answer
    x = 593,679,973.20

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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.