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Finding the Fourth Proportional to 495,887.77, 684,310.74 and 281,047.69

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Solution

The fourth proportional to 495,887.77, 684,310.74 and 281,047.69 is: 387,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,887.77 : 684,310.74 = 281,047.69 : x
  2. Step 2: Convert to fraction form
    495,887.77/684,310.74 = 281,047.69/x
  3. Step 3: Cross multiply
    495,887.77x = 684,310.74 × 281,047.69
  4. Step 4: Simplify right side
    495,887.77x = 192,323,952,719.19
  5. Step 5: Solve for x
    x = 192,323,952,719.19/495,887.77
  6. Step 6: Final answer
    x = 387,837.66

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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.