Home / 810,003.40-1,215,350.70-389,062.60

Finding the Fourth Proportional to 810,003.40, 1,215,350.70 and 389,062.60

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Solution

The fourth proportional to 810,003.40, 1,215,350.70 and 389,062.60 is: 583,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,003.40 : 1,215,350.70 = 389,062.60 : x
  2. Step 2: Convert to fraction form
    810,003.40/1,215,350.70 = 389,062.60/x
  3. Step 3: Cross multiply
    810,003.40x = 1,215,350.70 × 389,062.60
  4. Step 4: Simplify right side
    810,003.40x = 472,847,503,253.82
  5. Step 5: Solve for x
    x = 472,847,503,253.82/810,003.40
  6. Step 6: Final answer
    x = 583,759.90

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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.