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Finding the Fourth Proportional to 543,456.12, 749,992.89 and 301,738.71

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Solution

The fourth proportional to 543,456.12, 749,992.89 and 301,738.71 is: 416,412.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,456.12 : 749,992.89 = 301,738.71 : x
  2. Step 2: Convert to fraction form
    543,456.12/749,992.89 = 301,738.71/x
  3. Step 3: Cross multiply
    543,456.12x = 749,992.89 × 301,738.71
  4. Step 4: Simplify right side
    543,456.12x = 226,301,887,137.77
  5. Step 5: Solve for x
    x = 226,301,887,137.77/543,456.12
  6. Step 6: Final answer
    x = 416,412.44

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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.