Home / 853,641.48-1,280,297.91-398,107.66

Finding the Fourth Proportional to 853,641.48, 1,280,297.91 and 398,107.66

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Solution

The fourth proportional to 853,641.48, 1,280,297.91 and 398,107.66 is: 597,084.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,641.48 : 1,280,297.91 = 398,107.66 : x
  2. Step 2: Convert to fraction form
    853,641.48/1,280,297.91 = 398,107.66/x
  3. Step 3: Cross multiply
    853,641.48x = 1,280,297.91 × 398,107.66
  4. Step 4: Simplify right side
    853,641.48x = 509,696,405,052.99
  5. Step 5: Solve for x
    x = 509,696,405,052.99/853,641.48
  6. Step 6: Final answer
    x = 597,084.86

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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.