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Finding the Fourth Proportional to 543,021.54, 749,410.79 and 301,349.81

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Solution

The fourth proportional to 543,021.54, 749,410.79 and 301,349.81 is: 415,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,021.54 : 749,410.79 = 301,349.81 : x
  2. Step 2: Convert to fraction form
    543,021.54/749,410.79 = 301,349.81/x
  3. Step 3: Cross multiply
    543,021.54x = 749,410.79 × 301,349.81
  4. Step 4: Simplify right side
    543,021.54x = 225,834,793,924.65
  5. Step 5: Solve for x
    x = 225,834,793,924.65/543,021.54
  6. Step 6: Final answer
    x = 415,885.52

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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.