Home / 378,855,425.61-522,532,398.87-326,021,185.17

Finding the Fourth Proportional to 378,855,425.61, 522,532,398.87 and 326,021,185.17

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Solution

The fourth proportional to 378,855,425.61, 522,532,398.87 and 326,021,185.17 is: 449,661,323.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,855,425.61 : 522,532,398.87 = 326,021,185.17 : x
  2. Step 2: Convert to fraction form
    378,855,425.61/522,532,398.87 = 326,021,185.17/x
  3. Step 3: Cross multiply
    378,855,425.61x = 522,532,398.87 × 326,021,185.17
  4. Step 4: Simplify right side
    378,855,425.61x = 170,356,631,969,320,576
  5. Step 5: Solve for x
    x = 170,356,631,969,320,576/378,855,425.61
  6. Step 6: Final answer
    x = 449,661,323.17

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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.