Home / 723,822.51-998,865.78-392,673.57

Finding the Fourth Proportional to 723,822.51, 998,865.78 and 392,673.57

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Solution

The fourth proportional to 723,822.51, 998,865.78 and 392,673.57 is: 541,884.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,822.51 : 998,865.78 = 392,673.57 : x
  2. Step 2: Convert to fraction form
    723,822.51/998,865.78 = 392,673.57/x
  3. Step 3: Cross multiply
    723,822.51x = 998,865.78 × 392,673.57
  4. Step 4: Simplify right side
    723,822.51x = 392,228,192,183.78
  5. Step 5: Solve for x
    x = 392,228,192,183.78/723,822.51
  6. Step 6: Final answer
    x = 541,884.49

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1.5x scale

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.