Home / 431,796,285.90-647,694,428.85-213,480,323.10

Finding the Fourth Proportional to 431,796,285.90, 647,694,428.85 and 213,480,323.10

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Solution

The fourth proportional to 431,796,285.90, 647,694,428.85 and 213,480,323.10 is: 320,220,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,796,285.90 : 647,694,428.85 = 213,480,323.10 : x
  2. Step 2: Convert to fraction form
    431,796,285.90/647,694,428.85 = 213,480,323.10/x
  3. Step 3: Cross multiply
    431,796,285.90x = 647,694,428.85 × 213,480,323.10
  4. Step 4: Simplify right side
    431,796,285.90x = 138,270,015,940,967,968
  5. Step 5: Solve for x
    x = 138,270,015,940,967,968/431,796,285.90
  6. Step 6: Final answer
    x = 320,220,484.65

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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.