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Finding the Fourth Proportional to 495,491.34, 683,777.46 and 280,672.83

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Solution

The fourth proportional to 495,491.34, 683,777.46 and 280,672.83 is: 387,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,491.34 : 683,777.46 = 280,672.83 : x
  2. Step 2: Convert to fraction form
    495,491.34/683,777.46 = 280,672.83/x
  3. Step 3: Cross multiply
    495,491.34x = 683,777.46 × 280,672.83
  4. Step 4: Simplify right side
    495,491.34x = 191,917,754,788.41
  5. Step 5: Solve for x
    x = 191,917,754,788.41/495,491.34
  6. Step 6: Final answer
    x = 387,328.17

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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.