Home / 386,021,185.74-532,714,629.69-209,809,128.24

Finding the Fourth Proportional to 386,021,185.74, 532,714,629.69 and 209,809,128.24

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Solution

The fourth proportional to 386,021,185.74, 532,714,629.69 and 209,809,128.24 is: 289,539,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,021,185.74 : 532,714,629.69 = 209,809,128.24 : x
  2. Step 2: Convert to fraction form
    386,021,185.74/532,714,629.69 = 209,809,128.24/x
  3. Step 3: Cross multiply
    386,021,185.74x = 532,714,629.69 × 209,809,128.24
  4. Step 4: Simplify right side
    386,021,185.74x = 111,768,392,055,953,328
  5. Step 5: Solve for x
    x = 111,768,392,055,953,328/386,021,185.74
  6. Step 6: Final answer
    x = 289,539,528.36

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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.