Home / 431,796,349.40-647,694,524.10-213,480,386.60

Finding the Fourth Proportional to 431,796,349.40, 647,694,524.10 and 213,480,386.60

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Solution

The fourth proportional to 431,796,349.40, 647,694,524.10 and 213,480,386.60 is: 320,220,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,796,349.40 : 647,694,524.10 = 213,480,386.60 : x
  2. Step 2: Convert to fraction form
    431,796,349.40/647,694,524.10 = 213,480,386.60/x
  3. Step 3: Cross multiply
    431,796,349.40x = 647,694,524.10 × 213,480,386.60
  4. Step 4: Simplify right side
    431,796,349.40x = 138,270,077,403,571,024
  5. Step 5: Solve for x
    x = 138,270,077,403,571,024/431,796,349.40
  6. Step 6: Final answer
    x = 320,220,579.90

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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.