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Finding the Fourth Proportional to 453,426.80, 680,140.20 and 412,991.60

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Solution

The fourth proportional to 453,426.80, 680,140.20 and 412,991.60 is: 619,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,426.80 : 680,140.20 = 412,991.60 : x
  2. Step 2: Convert to fraction form
    453,426.80/680,140.20 = 412,991.60/x
  3. Step 3: Cross multiply
    453,426.80x = 680,140.20 × 412,991.60
  4. Step 4: Simplify right side
    453,426.80x = 280,892,189,422.32
  5. Step 5: Solve for x
    x = 280,892,189,422.32/453,426.80
  6. Step 6: Final answer
    x = 619,487.40

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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.