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Finding the Fourth Proportional to 740,384, 1,021,651.52 and 418,074.56

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Solution

The fourth proportional to 740,384, 1,021,651.52 and 418,074.56 is: 576,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,384 : 1,021,651.52 = 418,074.56 : x
  2. Step 2: Convert to fraction form
    740,384/1,021,651.52 = 418,074.56/x
  3. Step 3: Cross multiply
    740,384x = 1,021,651.52 × 418,074.56
  4. Step 4: Simplify right side
    740,384x = 427,126,509,697.33
  5. Step 5: Solve for x
    x = 427,126,509,697.33/740,384
  6. Step 6: Final answer
    x = 576,898.62

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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.