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Finding the Fourth Proportional to 574,721.76, 793,140.63 and 320,072.94

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Solution

The fourth proportional to 574,721.76, 793,140.63 and 320,072.94 is: 441,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,721.76 : 793,140.63 = 320,072.94 : x
  2. Step 2: Convert to fraction form
    574,721.76/793,140.63 = 320,072.94/x
  3. Step 3: Cross multiply
    574,721.76x = 793,140.63 × 320,072.94
  4. Step 4: Simplify right side
    574,721.76x = 253,862,853,277.55
  5. Step 5: Solve for x
    x = 253,862,853,277.55/574,721.76
  6. Step 6: Final answer
    x = 441,714.36

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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.