Home / 723,289.26-998,137.53-400,991.07

Finding the Fourth Proportional to 723,289.26, 998,137.53 and 400,991.07

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Solution

The fourth proportional to 723,289.26, 998,137.53 and 400,991.07 is: 553,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,289.26 : 998,137.53 = 400,991.07 : x
  2. Step 2: Convert to fraction form
    723,289.26/998,137.53 = 400,991.07/x
  3. Step 3: Cross multiply
    723,289.26x = 998,137.53 × 400,991.07
  4. Step 4: Simplify right side
    723,289.26x = 400,244,236,161.86
  5. Step 5: Solve for x
    x = 400,244,236,161.86/723,289.26
  6. Step 6: Final answer
    x = 553,366.76

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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.