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Finding the Fourth Proportional to 495,978.62, 684,406.71 and 275,221.44

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Solution

The fourth proportional to 495,978.62, 684,406.71 and 275,221.44 is: 379,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,978.62 : 684,406.71 = 275,221.44 : x
  2. Step 2: Convert to fraction form
    495,978.62/684,406.71 = 275,221.44/x
  3. Step 3: Cross multiply
    495,978.62x = 684,406.71 × 275,221.44
  4. Step 4: Simplify right side
    495,978.62x = 188,363,400,271.86
  5. Step 5: Solve for x
    x = 188,363,400,271.86/495,978.62
  6. Step 6: Final answer
    x = 379,781.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.