Home / 403,008,007.20-604,512,010.80-379,120,135.20

Finding the Fourth Proportional to 403,008,007.20, 604,512,010.80 and 379,120,135.20

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Solution

The fourth proportional to 403,008,007.20, 604,512,010.80 and 379,120,135.20 is: 568,680,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,008,007.20 : 604,512,010.80 = 379,120,135.20 : x
  2. Step 2: Convert to fraction form
    403,008,007.20/604,512,010.80 = 379,120,135.20/x
  3. Step 3: Cross multiply
    403,008,007.20x = 604,512,010.80 × 379,120,135.20
  4. Step 4: Simplify right side
    403,008,007.20x = 229,182,675,264,519,840
  5. Step 5: Solve for x
    x = 229,182,675,264,519,840/403,008,007.20
  6. Step 6: Final answer
    x = 568,680,202.80

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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.