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Finding the Fourth Proportional to 568,628.04, 785,021.96 and 387,605.90

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Solution

The fourth proportional to 568,628.04, 785,021.96 and 387,605.90 is: 535,111.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,628.04 : 785,021.96 = 387,605.90 : x
  2. Step 2: Convert to fraction form
    568,628.04/785,021.96 = 387,605.90/x
  3. Step 3: Cross multiply
    568,628.04x = 785,021.96 × 387,605.90
  4. Step 4: Simplify right side
    568,628.04x = 304,279,146,257.13
  5. Step 5: Solve for x
    x = 304,279,146,257.13/568,628.04
  6. Step 6: Final answer
    x = 535,111.04

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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.