Home / 387,974,593.56-582,218,923.68-213,219,668.52

Finding the Fourth Proportional to 387,974,593.56, 582,218,923.68 and 213,219,668.52

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Solution

The fourth proportional to 387,974,593.56, 582,218,923.68 and 213,219,668.52 is: 319,970,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,974,593.56 : 582,218,923.68 = 213,219,668.52 : x
  2. Step 2: Convert to fraction form
    387,974,593.56/582,218,923.68 = 213,219,668.52/x
  3. Step 3: Cross multiply
    387,974,593.56x = 582,218,923.68 × 213,219,668.52
  4. Step 4: Simplify right side
    387,974,593.56x = 124,140,525,913,120,768
  5. Step 5: Solve for x
    x = 124,140,525,913,120,768/387,974,593.56
  6. Step 6: Final answer
    x = 319,970,760.90

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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.