Home / 717,178,792,740.12-989,706,660,885.30-392,019,383,087.28

Finding the Fourth Proportional to 717,178,792,740.12, 989,706,660,885.30 and 392,019,383,087.28

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Solution

The fourth proportional to 717,178,792,740.12, 989,706,660,885.30 and 392,019,383,087.28 is: 540,986,708,705.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,178,792,740.12 : 989,706,660,885.30 = 392,019,383,087.28 : x
  2. Step 2: Convert to fraction form
    717,178,792,740.12/989,706,660,885.30 = 392,019,383,087.28/x
  3. Step 3: Cross multiply
    717,178,792,740.12x = 989,706,660,885.30 × 392,019,383,087.28
  4. Step 4: Simplify right side
    717,178,792,740.12x = 387,984,194,637,627,175,993,344
  5. Step 5: Solve for x
    x = 387,984,194,637,627,175,993,344/717,178,792,740.12
  6. Step 6: Final answer
    x = 540,986,708,705.17

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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.