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Finding the Fourth Proportional to 495,118.82, 683,290.41 and 280,306.82

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Solution

The fourth proportional to 495,118.82, 683,290.41 and 280,306.82 is: 386,838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,118.82 : 683,290.41 = 280,306.82 : x
  2. Step 2: Convert to fraction form
    495,118.82/683,290.41 = 280,306.82/x
  3. Step 3: Cross multiply
    495,118.82x = 683,290.41 × 280,306.82
  4. Step 4: Simplify right side
    495,118.82x = 191,530,961,963.60
  5. Step 5: Solve for x
    x = 191,530,961,963.60/495,118.82
  6. Step 6: Final answer
    x = 386,838.38

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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.