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Finding the Fourth Proportional to 495,570.87, 683,865.87 and 280,706.61

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Solution

The fourth proportional to 495,570.87, 683,865.87 and 280,706.61 is: 387,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,570.87 : 683,865.87 = 280,706.61 : x
  2. Step 2: Convert to fraction form
    495,570.87/683,865.87 = 280,706.61/x
  3. Step 3: Cross multiply
    495,570.87x = 683,865.87 × 280,706.61
  4. Step 4: Simplify right side
    495,570.87x = 191,965,670,062.40
  5. Step 5: Solve for x
    x = 191,965,670,062.40/495,570.87
  6. Step 6: Final answer
    x = 387,362.70

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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.