Home / 631,023,786.91-870,361,201.78-442,894,060.09

Finding the Fourth Proportional to 631,023,786.91, 870,361,201.78 and 442,894,060.09

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Solution

The fourth proportional to 631,023,786.91, 870,361,201.78 and 442,894,060.09 is: 610,876,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,023,786.91 : 870,361,201.78 = 442,894,060.09 : x
  2. Step 2: Convert to fraction form
    631,023,786.91/870,361,201.78 = 442,894,060.09/x
  3. Step 3: Cross multiply
    631,023,786.91x = 870,361,201.78 × 442,894,060.09
  4. Step 4: Simplify right side
    631,023,786.91x = 385,477,806,401,155,904
  5. Step 5: Solve for x
    x = 385,477,806,401,155,904/631,023,786.91
  6. Step 6: Final answer
    x = 610,876,823.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.