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Finding the Fourth Proportional to 495,343.54, 683,576.70 and 280,525.42

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Solution

The fourth proportional to 495,343.54, 683,576.70 and 280,525.42 is: 387,126.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,343.54 : 683,576.70 = 280,525.42 : x
  2. Step 2: Convert to fraction form
    495,343.54/683,576.70 = 280,525.42/x
  3. Step 3: Cross multiply
    495,343.54x = 683,576.70 × 280,525.42
  4. Step 4: Simplify right side
    495,343.54x = 191,760,640,869.71
  5. Step 5: Solve for x
    x = 191,760,640,869.71/495,343.54
  6. Step 6: Final answer
    x = 387,126.56

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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.