Home / 655,325,087.40-982,987,631.10-398,175,877.80

Finding the Fourth Proportional to 655,325,087.40, 982,987,631.10 and 398,175,877.80

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Solution

The fourth proportional to 655,325,087.40, 982,987,631.10 and 398,175,877.80 is: 597,263,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,325,087.40 : 982,987,631.10 = 398,175,877.80 : x
  2. Step 2: Convert to fraction form
    655,325,087.40/982,987,631.10 = 398,175,877.80/x
  3. Step 3: Cross multiply
    655,325,087.40x = 982,987,631.10 × 398,175,877.80
  4. Step 4: Simplify right side
    655,325,087.40x = 391,401,962,879,785,088
  5. Step 5: Solve for x
    x = 391,401,962,879,785,088/655,325,087.40
  6. Step 6: Final answer
    x = 597,263,816.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.