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Finding the Fourth Proportional to 723,403.56, 998,308.89 and 401,127.24

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Solution

The fourth proportional to 723,403.56, 998,308.89 and 401,127.24 is: 553,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,403.56 : 998,308.89 = 401,127.24 : x
  2. Step 2: Convert to fraction form
    723,403.56/998,308.89 = 401,127.24/x
  3. Step 3: Cross multiply
    723,403.56x = 998,308.89 × 401,127.24
  4. Step 4: Simplify right side
    723,403.56x = 400,448,889,713.16
  5. Step 5: Solve for x
    x = 400,448,889,713.16/723,403.56
  6. Step 6: Final answer
    x = 553,562.23

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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.