Home / 838,484.87-1,257,880.46-389,143.85

Finding the Fourth Proportional to 838,484.87, 1,257,880.46 and 389,143.85

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Solution

The fourth proportional to 838,484.87, 1,257,880.46 and 389,143.85 is: 583,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,484.87 : 1,257,880.46 = 389,143.85 : x
  2. Step 2: Convert to fraction form
    838,484.87/1,257,880.46 = 389,143.85/x
  3. Step 3: Cross multiply
    838,484.87x = 1,257,880.46 × 389,143.85
  4. Step 4: Simplify right side
    838,484.87x = 489,496,436,809.05
  5. Step 5: Solve for x
    x = 489,496,436,809.05/838,484.87
  6. Step 6: Final answer
    x = 583,786.85

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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.