Home / 885,890,995.20-1,328,836,492.80-394,603,315.20

Finding the Fourth Proportional to 885,890,995.20, 1,328,836,492.80 and 394,603,315.20

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Solution

The fourth proportional to 885,890,995.20, 1,328,836,492.80 and 394,603,315.20 is: 591,904,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,890,995.20 : 1,328,836,492.80 = 394,603,315.20 : x
  2. Step 2: Convert to fraction form
    885,890,995.20/1,328,836,492.80 = 394,603,315.20/x
  3. Step 3: Cross multiply
    885,890,995.20x = 1,328,836,492.80 × 394,603,315.20
  4. Step 4: Simplify right side
    885,890,995.20x = 524,363,285,417,620,864
  5. Step 5: Solve for x
    x = 524,363,285,417,620,864/885,890,995.20
  6. Step 6: Final answer
    x = 591,904,972.80

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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.