Home / 691,571,342.61-954,391,216.14-378,298,387.53

Finding the Fourth Proportional to 691,571,342.61, 954,391,216.14 and 378,298,387.53

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Solution

The fourth proportional to 691,571,342.61, 954,391,216.14 and 378,298,387.53 is: 522,064,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,571,342.61 : 954,391,216.14 = 378,298,387.53 : x
  2. Step 2: Convert to fraction form
    691,571,342.61/954,391,216.14 = 378,298,387.53/x
  3. Step 3: Cross multiply
    691,571,342.61x = 954,391,216.14 × 378,298,387.53
  4. Step 4: Simplify right side
    691,571,342.61x = 361,044,658,138,557,696
  5. Step 5: Solve for x
    x = 361,044,658,138,557,696/691,571,342.61
  6. Step 6: Final answer
    x = 522,064,226.63

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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.