Home / 388,038,912.20-582,058,368.30-265,594,905.80

Finding the Fourth Proportional to 388,038,912.20, 582,058,368.30 and 265,594,905.80

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Solution

The fourth proportional to 388,038,912.20, 582,058,368.30 and 265,594,905.80 is: 398,392,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,038,912.20 : 582,058,368.30 = 265,594,905.80 : x
  2. Step 2: Convert to fraction form
    388,038,912.20/582,058,368.30 = 265,594,905.80/x
  3. Step 3: Cross multiply
    388,038,912.20x = 582,058,368.30 × 265,594,905.80
  4. Step 4: Simplify right side
    388,038,912.20x = 154,591,737,498,740,192
  5. Step 5: Solve for x
    x = 154,591,737,498,740,192/388,038,912.20
  6. Step 6: Final answer
    x = 398,392,358.70

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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.