Home / 825,540,981.57-1,139,212,170.99-449,199,047.25

Finding the Fourth Proportional to 825,540,981.57, 1,139,212,170.99 and 449,199,047.25

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Solution

The fourth proportional to 825,540,981.57, 1,139,212,170.99 and 449,199,047.25 is: 619,875,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,540,981.57 : 1,139,212,170.99 = 449,199,047.25 : x
  2. Step 2: Convert to fraction form
    825,540,981.57/1,139,212,170.99 = 449,199,047.25/x
  3. Step 3: Cross multiply
    825,540,981.57x = 1,139,212,170.99 × 449,199,047.25
  4. Step 4: Simplify right side
    825,540,981.57x = 511,733,021,824,312,064
  5. Step 5: Solve for x
    x = 511,733,021,824,312,064/825,540,981.57
  6. Step 6: Final answer
    x = 619,875,976.18

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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.