Home / 487,631.43-672,660.54-283,659.39

Finding the Fourth Proportional to 487,631.43, 672,660.54 and 283,659.39

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Solution

The fourth proportional to 487,631.43, 672,660.54 and 283,659.39 is: 391,292.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,631.43 : 672,660.54 = 283,659.39 : x
  2. Step 2: Convert to fraction form
    487,631.43/672,660.54 = 283,659.39/x
  3. Step 3: Cross multiply
    487,631.43x = 672,660.54 × 283,659.39
  4. Step 4: Simplify right side
    487,631.43x = 190,806,478,453.47
  5. Step 5: Solve for x
    x = 190,806,478,453.47/487,631.43
  6. Step 6: Final answer
    x = 391,292.41

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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.