Home / 726,108,497.21-1,086,908,223.53-393,288,920.84

Finding the Fourth Proportional to 726,108,497.21, 1,086,908,223.53 and 393,288,920.84

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Solution

The fourth proportional to 726,108,497.21, 1,086,908,223.53 and 393,288,920.84 is: 588,712,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,108,497.21 : 1,086,908,223.53 = 393,288,920.84 : x
  2. Step 2: Convert to fraction form
    726,108,497.21/1,086,908,223.53 = 393,288,920.84/x
  3. Step 3: Cross multiply
    726,108,497.21x = 1,086,908,223.53 × 393,288,920.84
  4. Step 4: Simplify right side
    726,108,497.21x = 427,468,962,284,235,136
  5. Step 5: Solve for x
    x = 427,468,962,284,235,136/726,108,497.21
  6. Step 6: Final answer
    x = 588,712,243.32

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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.