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Finding the Fourth Proportional to 611,613.27, 918,915.21 and 577,622.43

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Solution

The fourth proportional to 611,613.27, 918,915.21 and 577,622.43 is: 867,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,613.27 : 918,915.21 = 577,622.43 : x
  2. Step 2: Convert to fraction form
    611,613.27/918,915.21 = 577,622.43/x
  3. Step 3: Cross multiply
    611,613.27x = 918,915.21 × 577,622.43
  4. Step 4: Simplify right side
    611,613.27x = 530,786,036,564.16
  5. Step 5: Solve for x
    x = 530,786,036,564.16/611,613.27
  6. Step 6: Final answer
    x = 867,845.85

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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.