Home / 489,412,854.81-675,310,713.71-280,530,560.25

Finding the Fourth Proportional to 489,412,854.81, 675,310,713.71 and 280,530,560.25

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Solution

The fourth proportional to 489,412,854.81, 675,310,713.71 and 280,530,560.25 is: 387,086,875.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,412,854.81 : 675,310,713.71 = 280,530,560.25 : x
  2. Step 2: Convert to fraction form
    489,412,854.81/675,310,713.71 = 280,530,560.25/x
  3. Step 3: Cross multiply
    489,412,854.81x = 675,310,713.71 × 280,530,560.25
  4. Step 4: Simplify right side
    489,412,854.81x = 189,445,292,858,491,008
  5. Step 5: Solve for x
    x = 189,445,292,858,491,008/489,412,854.81
  6. Step 6: Final answer
    x = 387,086,875.62

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