Home / 495,120.42-683,282.45-280,255.88

Finding the Fourth Proportional to 495,120.42, 683,282.45 and 280,255.88

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Solution

The fourth proportional to 495,120.42, 683,282.45 and 280,255.88 is: 386,762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,120.42 : 683,282.45 = 280,255.88 : x
  2. Step 2: Convert to fraction form
    495,120.42/683,282.45 = 280,255.88/x
  3. Step 3: Cross multiply
    495,120.42x = 683,282.45 × 280,255.88
  4. Step 4: Simplify right side
    495,120.42x = 191,493,926,722.15
  5. Step 5: Solve for x
    x = 191,493,926,722.15/495,120.42
  6. Step 6: Final answer
    x = 386,762.33

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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.