Home / 717,178,792,739.74-989,706,660,884.77-392,019,383,086.90

Finding the Fourth Proportional to 717,178,792,739.74, 989,706,660,884.77 and 392,019,383,086.90

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Solution

The fourth proportional to 717,178,792,739.74, 989,706,660,884.77 and 392,019,383,086.90 is: 540,986,708,704.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,178,792,739.74 : 989,706,660,884.77 = 392,019,383,086.90 : x
  2. Step 2: Convert to fraction form
    717,178,792,739.74/989,706,660,884.77 = 392,019,383,086.90/x
  3. Step 3: Cross multiply
    717,178,792,739.74x = 989,706,660,884.77 × 392,019,383,086.90
  4. Step 4: Simplify right side
    717,178,792,739.74x = 387,984,194,637,043,328,876,544
  5. Step 5: Solve for x
    x = 387,984,194,637,043,328,876,544/717,178,792,739.74
  6. Step 6: Final answer
    x = 540,986,708,704.65

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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.