Home / 860,733.60-1,290,178.80-387,338.40

Finding the Fourth Proportional to 860,733.60, 1,290,178.80 and 387,338.40

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Solution

The fourth proportional to 860,733.60, 1,290,178.80 and 387,338.40 is: 580,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,733.60 : 1,290,178.80 = 387,338.40 : x
  2. Step 2: Convert to fraction form
    860,733.60/1,290,178.80 = 387,338.40/x
  3. Step 3: Cross multiply
    860,733.60x = 1,290,178.80 × 387,338.40
  4. Step 4: Simplify right side
    860,733.60x = 499,735,792,105.92
  5. Step 5: Solve for x
    x = 499,735,792,105.92/860,733.60
  6. Step 6: Final answer
    x = 580,592.87

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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.