Home / 679,339.02-937,467.59-388,940.95

Finding the Fourth Proportional to 679,339.02, 937,467.59 and 388,940.95

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Solution

The fourth proportional to 679,339.02, 937,467.59 and 388,940.95 is: 536,726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,339.02 : 937,467.59 = 388,940.95 : x
  2. Step 2: Convert to fraction form
    679,339.02/937,467.59 = 388,940.95/x
  3. Step 3: Cross multiply
    679,339.02x = 937,467.59 × 388,940.95
  4. Step 4: Simplify right side
    679,339.02x = 364,619,530,760.44
  5. Step 5: Solve for x
    x = 364,619,530,760.44/679,339.02
  6. Step 6: Final answer
    x = 536,726.91

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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.