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Finding the Fourth Proportional to 495,813.72, 684,552.42 and 380,887.68

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Solution

The fourth proportional to 495,813.72, 684,552.42 and 380,887.68 is: 525,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,813.72 : 684,552.42 = 380,887.68 : x
  2. Step 2: Convert to fraction form
    495,813.72/684,552.42 = 380,887.68/x
  3. Step 3: Cross multiply
    495,813.72x = 684,552.42 × 380,887.68
  4. Step 4: Simplify right side
    495,813.72x = 260,737,583,092.19
  5. Step 5: Solve for x
    x = 260,737,583,092.19/495,813.72
  6. Step 6: Final answer
    x = 525,878.11

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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.