Home / 853,832.80-1,279,712.40-380,015.20

Finding the Fourth Proportional to 853,832.80, 1,279,712.40 and 380,015.20

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Solution

The fourth proportional to 853,832.80, 1,279,712.40 and 380,015.20 is: 569,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,832.80 : 1,279,712.40 = 380,015.20 : x
  2. Step 2: Convert to fraction form
    853,832.80/1,279,712.40 = 380,015.20/x
  3. Step 3: Cross multiply
    853,832.80x = 1,279,712.40 × 380,015.20
  4. Step 4: Simplify right side
    853,832.80x = 486,310,163,628.48
  5. Step 5: Solve for x
    x = 486,310,163,628.48/853,832.80
  6. Step 6: Final answer
    x = 569,561.35

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1.5x scale

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.