Home / 419,280,564.20-628,920,846.30-128,147,124.20

Finding the Fourth Proportional to 419,280,564.20, 628,920,846.30 and 128,147,124.20

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Solution

The fourth proportional to 419,280,564.20, 628,920,846.30 and 128,147,124.20 is: 192,220,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,280,564.20 : 628,920,846.30 = 128,147,124.20 : x
  2. Step 2: Convert to fraction form
    419,280,564.20/628,920,846.30 = 128,147,124.20/x
  3. Step 3: Cross multiply
    419,280,564.20x = 628,920,846.30 × 128,147,124.20
  4. Step 4: Simplify right side
    419,280,564.20x = 80,594,397,802,775,200
  5. Step 5: Solve for x
    x = 80,594,397,802,775,200/419,280,564.20
  6. Step 6: Final answer
    x = 192,220,686.30

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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.