Home / 578,822.40-867,067.20-389,865.60

Finding the Fourth Proportional to 578,822.40, 867,067.20 and 389,865.60

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Solution

The fourth proportional to 578,822.40, 867,067.20 and 389,865.60 is: 584,012.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,822.40 : 867,067.20 = 389,865.60 : x
  2. Step 2: Convert to fraction form
    578,822.40/867,067.20 = 389,865.60/x
  3. Step 3: Cross multiply
    578,822.40x = 867,067.20 × 389,865.60
  4. Step 4: Simplify right side
    578,822.40x = 338,039,674,168.32
  5. Step 5: Solve for x
    x = 338,039,674,168.32/578,822.40
  6. Step 6: Final answer
    x = 584,012.77

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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.