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Finding the Fourth Proportional to 523,879.02, 723,040.02 and 309,071.88

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Solution

The fourth proportional to 523,879.02, 723,040.02 and 309,071.88 is: 426,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,879.02 : 723,040.02 = 309,071.88 : x
  2. Step 2: Convert to fraction form
    523,879.02/723,040.02 = 309,071.88/x
  3. Step 3: Cross multiply
    523,879.02x = 723,040.02 × 309,071.88
  4. Step 4: Simplify right side
    523,879.02x = 223,471,338,296.64
  5. Step 5: Solve for x
    x = 223,471,338,296.64/523,879.02
  6. Step 6: Final answer
    x = 426,570.51

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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.