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Finding the Fourth Proportional to 495,704.39, 684,074.27 and 280,886.31

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Solution

The fourth proportional to 495,704.39, 684,074.27 and 280,886.31 is: 387,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,704.39 : 684,074.27 = 280,886.31 : x
  2. Step 2: Convert to fraction form
    495,704.39/684,074.27 = 280,886.31/x
  3. Step 3: Cross multiply
    495,704.39x = 684,074.27 × 280,886.31
  4. Step 4: Simplify right side
    495,704.39x = 192,147,098,168.46
  5. Step 5: Solve for x
    x = 192,147,098,168.46/495,704.39
  6. Step 6: Final answer
    x = 387,624.37

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1.5x scale

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.