Home / 640,421,382,193.35-883,797,768,347.20-351,389,564,981.57

Finding the Fourth Proportional to 640,421,382,193.35, 883,797,768,347.20 and 351,389,564,981.57

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Solution

The fourth proportional to 640,421,382,193.35, 883,797,768,347.20 and 351,389,564,981.57 is: 484,926,521,796.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,421,382,193.35 : 883,797,768,347.20 = 351,389,564,981.57 : x
  2. Step 2: Convert to fraction form
    640,421,382,193.35/883,797,768,347.20 = 351,389,564,981.57/x
  3. Step 3: Cross multiply
    640,421,382,193.35x = 883,797,768,347.20 × 351,389,564,981.57
  4. Step 4: Simplify right side
    640,421,382,193.35x = 310,557,313,351,204,961,517,568
  5. Step 5: Solve for x
    x = 310,557,313,351,204,961,517,568/640,421,382,193.35
  6. Step 6: Final answer
    x = 484,926,521,796.62

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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.