Home / 646,834.95-969,179.79-393,348.66

Finding the Fourth Proportional to 646,834.95, 969,179.79 and 393,348.66

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Solution

The fourth proportional to 646,834.95, 969,179.79 and 393,348.66 is: 589,370.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,834.95 : 969,179.79 = 393,348.66 : x
  2. Step 2: Convert to fraction form
    646,834.95/969,179.79 = 393,348.66/x
  3. Step 3: Cross multiply
    646,834.95x = 969,179.79 × 393,348.66
  4. Step 4: Simplify right side
    646,834.95x = 381,225,571,695.58
  5. Step 5: Solve for x
    x = 381,225,571,695.58/646,834.95
  6. Step 6: Final answer
    x = 589,370.71

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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.