Home / 778,247.85-1,167,371.78-620,783.85

Finding the Fourth Proportional to 778,247.85, 1,167,371.78 and 620,783.85

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Solution

The fourth proportional to 778,247.85, 1,167,371.78 and 620,783.85 is: 931,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,247.85 : 1,167,371.78 = 620,783.85 : x
  2. Step 2: Convert to fraction form
    778,247.85/1,167,371.78 = 620,783.85/x
  3. Step 3: Cross multiply
    778,247.85x = 1,167,371.78 × 620,783.85
  4. Step 4: Simplify right side
    778,247.85x = 724,685,544,865.83
  5. Step 5: Solve for x
    x = 724,685,544,865.83/778,247.85
  6. Step 6: Final answer
    x = 931,175.78

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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.