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Finding the Fourth Proportional to 551,147.20, 826,720.80 and 362,190.40

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Solution

The fourth proportional to 551,147.20, 826,720.80 and 362,190.40 is: 543,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,147.20 : 826,720.80 = 362,190.40 : x
  2. Step 2: Convert to fraction form
    551,147.20/826,720.80 = 362,190.40/x
  3. Step 3: Cross multiply
    551,147.20x = 826,720.80 × 362,190.40
  4. Step 4: Simplify right side
    551,147.20x = 299,430,337,240.32
  5. Step 5: Solve for x
    x = 299,430,337,240.32/551,147.20
  6. Step 6: Final answer
    x = 543,285.60

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Similar ratio
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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.