Home / 717,178,792,740.74-989,706,660,886.15-392,019,383,087.90

Finding the Fourth Proportional to 717,178,792,740.74, 989,706,660,886.15 and 392,019,383,087.90

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Solution

The fourth proportional to 717,178,792,740.74, 989,706,660,886.15 and 392,019,383,087.90 is: 540,986,708,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,178,792,740.74 : 989,706,660,886.15 = 392,019,383,087.90 : x
  2. Step 2: Convert to fraction form
    717,178,792,740.74/989,706,660,886.15 = 392,019,383,087.90/x
  3. Step 3: Cross multiply
    717,178,792,740.74x = 989,706,660,886.15 × 392,019,383,087.90
  4. Step 4: Simplify right side
    717,178,792,740.74x = 387,984,194,638,574,014,955,520
  5. Step 5: Solve for x
    x = 387,984,194,638,574,014,955,520/717,178,792,740.74
  6. Step 6: Final answer
    x = 540,986,708,706.03

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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.