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Finding the Fourth Proportional to 540,022.70, 809,062.05 and 428,437.10

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Solution

The fourth proportional to 540,022.70, 809,062.05 and 428,437.10 is: 641,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,022.70 : 809,062.05 = 428,437.10 : x
  2. Step 2: Convert to fraction form
    540,022.70/809,062.05 = 428,437.10/x
  3. Step 3: Cross multiply
    540,022.70x = 809,062.05 × 428,437.10
  4. Step 4: Simplify right side
    540,022.70x = 346,632,198,422.06
  5. Step 5: Solve for x
    x = 346,632,198,422.06/540,022.70
  6. Step 6: Final answer
    x = 641,884.50

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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.