Home / 853,894.80-1,279,805.40-380,077.20

Finding the Fourth Proportional to 853,894.80, 1,279,805.40 and 380,077.20

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Solution

The fourth proportional to 853,894.80, 1,279,805.40 and 380,077.20 is: 569,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,894.80 : 1,279,805.40 = 380,077.20 : x
  2. Step 2: Convert to fraction form
    853,894.80/1,279,805.40 = 380,077.20/x
  3. Step 3: Cross multiply
    853,894.80x = 1,279,805.40 × 380,077.20
  4. Step 4: Simplify right side
    853,894.80x = 486,424,852,976.88
  5. Step 5: Solve for x
    x = 486,424,852,976.88/853,894.80
  6. Step 6: Final answer
    x = 569,654.31

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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.