Home / 646,766.49-969,414.04-393,488.71

Finding the Fourth Proportional to 646,766.49, 969,414.04 and 393,488.71

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Solution

The fourth proportional to 646,766.49, 969,414.04 and 393,488.71 is: 589,785.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,766.49 : 969,414.04 = 393,488.71 : x
  2. Step 2: Convert to fraction form
    646,766.49/969,414.04 = 393,488.71/x
  3. Step 3: Cross multiply
    646,766.49x = 969,414.04 × 393,488.71
  4. Step 4: Simplify right side
    646,766.49x = 381,453,480,055.49
  5. Step 5: Solve for x
    x = 381,453,480,055.49/646,766.49
  6. Step 6: Final answer
    x = 589,785.47

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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.