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Finding the Fourth Proportional to 575,402.72, 794,055.81 and 320,753.91

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Solution

The fourth proportional to 575,402.72, 794,055.81 and 320,753.91 is: 442,640.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,402.72 : 794,055.81 = 320,753.91 : x
  2. Step 2: Convert to fraction form
    575,402.72/794,055.81 = 320,753.91/x
  3. Step 3: Cross multiply
    575,402.72x = 794,055.81 × 320,753.91
  4. Step 4: Simplify right side
    575,402.72x = 254,696,505,815.72
  5. Step 5: Solve for x
    x = 254,696,505,815.72/575,402.72
  6. Step 6: Final answer
    x = 442,640.43

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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.