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Finding the Fourth Proportional to 500,885.92, 691,005.36 and 331,356.16

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Solution

The fourth proportional to 500,885.92, 691,005.36 and 331,356.16 is: 457,127.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,885.92 : 691,005.36 = 331,356.16 : x
  2. Step 2: Convert to fraction form
    500,885.92/691,005.36 = 331,356.16/x
  3. Step 3: Cross multiply
    500,885.92x = 691,005.36 × 331,356.16
  4. Step 4: Simplify right side
    500,885.92x = 228,968,882,629.02
  5. Step 5: Solve for x
    x = 228,968,882,629.02/500,885.92
  6. Step 6: Final answer
    x = 457,127.81

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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.