Home / 487,416.80-672,653.54-272,556.36

Finding the Fourth Proportional to 487,416.80, 672,653.54 and 272,556.36

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Solution

The fourth proportional to 487,416.80, 672,653.54 and 272,556.36 is: 376,138.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,416.80 : 672,653.54 = 272,556.36 : x
  2. Step 2: Convert to fraction form
    487,416.80/672,653.54 = 272,556.36/x
  3. Step 3: Cross multiply
    487,416.80x = 672,653.54 × 272,556.36
  4. Step 4: Simplify right side
    487,416.80x = 183,335,997,480.58
  5. Step 5: Solve for x
    x = 183,335,997,480.58/487,416.80
  6. Step 6: Final answer
    x = 376,138.03

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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.