Home / 323,740,579.20-485,610,868.80-289,728,355.20

Finding the Fourth Proportional to 323,740,579.20, 485,610,868.80 and 289,728,355.20

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Solution

The fourth proportional to 323,740,579.20, 485,610,868.80 and 289,728,355.20 is: 434,592,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,740,579.20 : 485,610,868.80 = 289,728,355.20 : x
  2. Step 2: Convert to fraction form
    323,740,579.20/485,610,868.80 = 289,728,355.20/x
  3. Step 3: Cross multiply
    323,740,579.20x = 485,610,868.80 × 289,728,355.20
  4. Step 4: Simplify right side
    323,740,579.20x = 140,695,238,284,666,992
  5. Step 5: Solve for x
    x = 140,695,238,284,666,992/323,740,579.20
  6. Step 6: Final answer
    x = 434,592,532.80

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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.