Home / 411,872,891.20-617,799,890.40-207,346,043.20

Finding the Fourth Proportional to 411,872,891.20, 617,799,890.40 and 207,346,043.20

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Solution

The fourth proportional to 411,872,891.20, 617,799,890.40 and 207,346,043.20 is: 311,014,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,872,891.20 : 617,799,890.40 = 207,346,043.20 : x
  2. Step 2: Convert to fraction form
    411,872,891.20/617,799,890.40 = 207,346,043.20/x
  3. Step 3: Cross multiply
    411,872,891.20x = 617,799,890.40 × 207,346,043.20
  4. Step 4: Simplify right side
    411,872,891.20x = 128,098,362,763,833,648
  5. Step 5: Solve for x
    x = 128,098,362,763,833,648/411,872,891.20
  6. Step 6: Final answer
    x = 311,014,309.27

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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.