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Finding the Fourth Proportional to 811,472.40, 1,217,381.40 and 250,563.60

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Solution

The fourth proportional to 811,472.40, 1,217,381.40 and 250,563.60 is: 375,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,472.40 : 1,217,381.40 = 250,563.60 : x
  2. Step 2: Convert to fraction form
    811,472.40/1,217,381.40 = 250,563.60/x
  3. Step 3: Cross multiply
    811,472.40x = 1,217,381.40 × 250,563.60
  4. Step 4: Simplify right side
    811,472.40x = 305,031,466,157.04
  5. Step 5: Solve for x
    x = 305,031,466,157.04/811,472.40
  6. Step 6: Final answer
    x = 375,898.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.