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Finding the Fourth Proportional to 478,797,584.88, 660,740,368.69 and 258,781,010.88

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Solution

The fourth proportional to 478,797,584.88, 660,740,368.69 and 258,781,010.88 is: 357,117,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,797,584.88 : 660,740,368.69 = 258,781,010.88 : x
  2. Step 2: Convert to fraction form
    478,797,584.88/660,740,368.69 = 258,781,010.88/x
  3. Step 3: Cross multiply
    478,797,584.88x = 660,740,368.69 × 258,781,010.88
  4. Step 4: Simplify right side
    478,797,584.88x = 170,987,060,539,145,568
  5. Step 5: Solve for x
    x = 170,987,060,539,145,568/478,797,584.88
  6. Step 6: Final answer
    x = 357,117,633.71

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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.