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Finding the Fourth Proportional to 575,791.72, 794,592.65 and 321,142.91

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Solution

The fourth proportional to 575,791.72, 794,592.65 and 321,142.91 is: 443,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,791.72 : 794,592.65 = 321,142.91 : x
  2. Step 2: Convert to fraction form
    575,791.72/794,592.65 = 321,142.91/x
  3. Step 3: Cross multiply
    575,791.72x = 794,592.65 × 321,142.91
  4. Step 4: Simplify right side
    575,791.72x = 255,177,792,715.51
  5. Step 5: Solve for x
    x = 255,177,792,715.51/575,791.72
  6. Step 6: Final answer
    x = 443,177.25

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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.