Home / 640,421,382,192.85-883,797,768,346.50-351,389,564,981.07

Finding the Fourth Proportional to 640,421,382,192.85, 883,797,768,346.50 and 351,389,564,981.07

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Solution

The fourth proportional to 640,421,382,192.85, 883,797,768,346.50 and 351,389,564,981.07 is: 484,926,521,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,421,382,192.85 : 883,797,768,346.50 = 351,389,564,981.07 : x
  2. Step 2: Convert to fraction form
    640,421,382,192.85/883,797,768,346.50 = 351,389,564,981.07/x
  3. Step 3: Cross multiply
    640,421,382,192.85x = 883,797,768,346.50 × 351,389,564,981.07
  4. Step 4: Simplify right side
    640,421,382,192.85x = 310,557,313,350,517,095,661,568
  5. Step 5: Solve for x
    x = 310,557,313,350,517,095,661,568/640,421,382,192.85
  6. Step 6: Final answer
    x = 484,926,521,795.92

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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.