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Finding the Fourth Proportional to 487,695.48, 672,992.64 and 272,794.02

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Solution

The fourth proportional to 487,695.48, 672,992.64 and 272,794.02 is: 376,440.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,695.48 : 672,992.64 = 272,794.02 : x
  2. Step 2: Convert to fraction form
    487,695.48/672,992.64 = 272,794.02/x
  3. Step 3: Cross multiply
    487,695.48x = 672,992.64 × 272,794.02
  4. Step 4: Simplify right side
    487,695.48x = 183,588,367,696.01
  5. Step 5: Solve for x
    x = 183,588,367,696.01/487,695.48
  6. Step 6: Final answer
    x = 376,440.58

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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.