Home / 853,642.48-1,280,299.41-398,108.66

Finding the Fourth Proportional to 853,642.48, 1,280,299.41 and 398,108.66

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Solution

The fourth proportional to 853,642.48, 1,280,299.41 and 398,108.66 is: 597,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,642.48 : 1,280,299.41 = 398,108.66 : x
  2. Step 2: Convert to fraction form
    853,642.48/1,280,299.41 = 398,108.66/x
  3. Step 3: Cross multiply
    853,642.48x = 1,280,299.41 × 398,108.66
  4. Step 4: Simplify right side
    853,642.48x = 509,698,282,513.89
  5. Step 5: Solve for x
    x = 509,698,282,513.89/853,642.48
  6. Step 6: Final answer
    x = 597,086.36

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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.