Home / 640,421,382,194.35-883,797,768,348.55-351,389,564,982.57

Finding the Fourth Proportional to 640,421,382,194.35, 883,797,768,348.55 and 351,389,564,982.57

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Solution

The fourth proportional to 640,421,382,194.35, 883,797,768,348.55 and 351,389,564,982.57 is: 484,926,521,797.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,421,382,194.35 : 883,797,768,348.55 = 351,389,564,982.57 : x
  2. Step 2: Convert to fraction form
    640,421,382,194.35/883,797,768,348.55 = 351,389,564,982.57/x
  3. Step 3: Cross multiply
    640,421,382,194.35x = 883,797,768,348.55 × 351,389,564,982.57
  4. Step 4: Simplify right side
    640,421,382,194.35x = 310,557,313,352,563,177,816,064
  5. Step 5: Solve for x
    x = 310,557,313,352,563,177,816,064/640,421,382,194.35
  6. Step 6: Final answer
    x = 484,926,521,797.98

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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.