Home / 511,958,961.12-706,502,909.88-288,987,575.52

Finding the Fourth Proportional to 511,958,961.12, 706,502,909.88 and 288,987,575.52

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Solution

The fourth proportional to 511,958,961.12, 706,502,909.88 and 288,987,575.52 is: 398,802,596.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,958,961.12 : 706,502,909.88 = 288,987,575.52 : x
  2. Step 2: Convert to fraction form
    511,958,961.12/706,502,909.88 = 288,987,575.52/x
  3. Step 3: Cross multiply
    511,958,961.12x = 706,502,909.88 × 288,987,575.52
  4. Step 4: Simplify right side
    511,958,961.12x = 204,170,563,024,046,240
  5. Step 5: Solve for x
    x = 204,170,563,024,046,240/511,958,961.12
  6. Step 6: Final answer
    x = 398,802,596.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.