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Finding the Fourth Proportional to 568,814.90, 785,279.82 and 387,792.81

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Solution

The fourth proportional to 568,814.90, 785,279.82 and 387,792.81 is: 535,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,814.90 : 785,279.82 = 387,792.81 : x
  2. Step 2: Convert to fraction form
    568,814.90/785,279.82 = 387,792.81/x
  3. Step 3: Cross multiply
    568,814.90x = 785,279.82 × 387,792.81
  4. Step 4: Simplify right side
    568,814.90x = 304,525,868,034.09
  5. Step 5: Solve for x
    x = 304,525,868,034.09/568,814.90
  6. Step 6: Final answer
    x = 535,369.01

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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.