Home / 838,486.87-1,257,883.46-389,145.85

Finding the Fourth Proportional to 838,486.87, 1,257,883.46 and 389,145.85

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Solution

The fourth proportional to 838,486.87, 1,257,883.46 and 389,145.85 is: 583,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,486.87 : 1,257,883.46 = 389,145.85 : x
  2. Step 2: Convert to fraction form
    838,486.87/1,257,883.46 = 389,145.85/x
  3. Step 3: Cross multiply
    838,486.87x = 1,257,883.46 × 389,145.85
  4. Step 4: Simplify right side
    838,486.87x = 489,500,128,242.64
  5. Step 5: Solve for x
    x = 489,500,128,242.64/838,486.87
  6. Step 6: Final answer
    x = 583,789.85

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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.