Home / 431,796,345.90-647,694,518.85-213,480,383.10

Finding the Fourth Proportional to 431,796,345.90, 647,694,518.85 and 213,480,383.10

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Solution

The fourth proportional to 431,796,345.90, 647,694,518.85 and 213,480,383.10 is: 320,220,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,796,345.90 : 647,694,518.85 = 213,480,383.10 : x
  2. Step 2: Convert to fraction form
    431,796,345.90/647,694,518.85 = 213,480,383.10/x
  3. Step 3: Cross multiply
    431,796,345.90x = 647,694,518.85 × 213,480,383.10
  4. Step 4: Simplify right side
    431,796,345.90x = 138,270,074,015,868,176
  5. Step 5: Solve for x
    x = 138,270,074,015,868,176/431,796,345.90
  6. Step 6: Final answer
    x = 320,220,574.65

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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.