Home / 642,083,453.61-886,079,700.95-348,728,021.61

Finding the Fourth Proportional to 642,083,453.61, 886,079,700.95 and 348,728,021.61

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Solution

The fourth proportional to 642,083,453.61, 886,079,700.95 and 348,728,021.61 is: 481,247,132.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,083,453.61 : 886,079,700.95 = 348,728,021.61 : x
  2. Step 2: Convert to fraction form
    642,083,453.61/886,079,700.95 = 348,728,021.61/x
  3. Step 3: Cross multiply
    642,083,453.61x = 886,079,700.95 × 348,728,021.61
  4. Step 4: Simplify right side
    642,083,453.61x = 309,000,821,099,330,304
  5. Step 5: Solve for x
    x = 309,000,821,099,330,304/642,083,453.61
  6. Step 6: Final answer
    x = 481,247,132.85

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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.