Home / 646,287.20-968,847.60-421,755.20

Finding the Fourth Proportional to 646,287.20, 968,847.60 and 421,755.20

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Solution

The fourth proportional to 646,287.20, 968,847.60 and 421,755.20 is: 632,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,287.20 : 968,847.60 = 421,755.20 : x
  2. Step 2: Convert to fraction form
    646,287.20/968,847.60 = 421,755.20/x
  3. Step 3: Cross multiply
    646,287.20x = 968,847.60 × 421,755.20
  4. Step 4: Simplify right side
    646,287.20x = 408,616,513,307.52
  5. Step 5: Solve for x
    x = 408,616,513,307.52/646,287.20
  6. Step 6: Final answer
    x = 632,252.21

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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.