Home / 729,065,890.64-1,093,155,966.84-285,877,589.60

Finding the Fourth Proportional to 729,065,890.64, 1,093,155,966.84 and 285,877,589.60

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Solution

The fourth proportional to 729,065,890.64, 1,093,155,966.84 and 285,877,589.60 is: 428,642,728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,065,890.64 : 1,093,155,966.84 = 285,877,589.60 : x
  2. Step 2: Convert to fraction form
    729,065,890.64/1,093,155,966.84 = 285,877,589.60/x
  3. Step 3: Cross multiply
    729,065,890.64x = 1,093,155,966.84 × 285,877,589.60
  4. Step 4: Simplify right side
    729,065,890.64x = 312,508,792,857,076,736
  5. Step 5: Solve for x
    x = 312,508,792,857,076,736/729,065,890.64
  6. Step 6: Final answer
    x = 428,642,728.82

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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.