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Finding the Fourth Proportional to 699,158.57, 964,912.82 and 427,385.54

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Solution

The fourth proportional to 699,158.57, 964,912.82 and 427,385.54 is: 589,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,158.57 : 964,912.82 = 427,385.54 : x
  2. Step 2: Convert to fraction form
    699,158.57/964,912.82 = 427,385.54/x
  3. Step 3: Cross multiply
    699,158.57x = 964,912.82 × 427,385.54
  4. Step 4: Simplify right side
    699,158.57x = 412,389,779,667.13
  5. Step 5: Solve for x
    x = 412,389,779,667.13/699,158.57
  6. Step 6: Final answer
    x = 589,837.27

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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.