Home / 645,947.20-968,920.80-616,916.80

Finding the Fourth Proportional to 645,947.20, 968,920.80 and 616,916.80

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Solution

The fourth proportional to 645,947.20, 968,920.80 and 616,916.80 is: 925,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,947.20 : 968,920.80 = 616,916.80 : x
  2. Step 2: Convert to fraction form
    645,947.20/968,920.80 = 616,916.80/x
  3. Step 3: Cross multiply
    645,947.20x = 968,920.80 × 616,916.80
  4. Step 4: Simplify right side
    645,947.20x = 597,743,519,389.44
  5. Step 5: Solve for x
    x = 597,743,519,389.44/645,947.20
  6. Step 6: Final answer
    x = 925,375.20

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1.5x scale

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.