Home / 442,880,138.80-664,320,208.20-422,724,746.80

Finding the Fourth Proportional to 442,880,138.80, 664,320,208.20 and 422,724,746.80

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Solution

The fourth proportional to 442,880,138.80, 664,320,208.20 and 422,724,746.80 is: 634,087,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,880,138.80 : 664,320,208.20 = 422,724,746.80 : x
  2. Step 2: Convert to fraction form
    442,880,138.80/664,320,208.20 = 422,724,746.80/x
  3. Step 3: Cross multiply
    442,880,138.80x = 664,320,208.20 × 422,724,746.80
  4. Step 4: Simplify right side
    442,880,138.80x = 280,824,591,805,468,320
  5. Step 5: Solve for x
    x = 280,824,591,805,468,320/442,880,138.80
  6. Step 6: Final answer
    x = 634,087,120.20

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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.