Home / 853,847.80-1,279,734.90-380,030.20

Finding the Fourth Proportional to 853,847.80, 1,279,734.90 and 380,030.20

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Solution

The fourth proportional to 853,847.80, 1,279,734.90 and 380,030.20 is: 569,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,847.80 : 1,279,734.90 = 380,030.20 : x
  2. Step 2: Convert to fraction form
    853,847.80/1,279,734.90 = 380,030.20/x
  3. Step 3: Cross multiply
    853,847.80x = 1,279,734.90 × 380,030.20
  4. Step 4: Simplify right side
    853,847.80x = 486,337,909,993.98
  5. Step 5: Solve for x
    x = 486,337,909,993.98/853,847.80
  6. Step 6: Final answer
    x = 569,583.84

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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.