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Finding the Fourth Proportional to 559,709.29, 772,399.11 and 317,992.29

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Solution

The fourth proportional to 559,709.29, 772,399.11 and 317,992.29 is: 438,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,709.29 : 772,399.11 = 317,992.29 : x
  2. Step 2: Convert to fraction form
    559,709.29/772,399.11 = 317,992.29/x
  3. Step 3: Cross multiply
    559,709.29x = 772,399.11 × 317,992.29
  4. Step 4: Simplify right side
    559,709.29x = 245,616,958,886.37
  5. Step 5: Solve for x
    x = 245,616,958,886.37/559,709.29
  6. Step 6: Final answer
    x = 438,829.52

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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.