Home / 762,865.20-1,144,816.20-425,905.20

Finding the Fourth Proportional to 762,865.20, 1,144,816.20 and 425,905.20

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Solution

The fourth proportional to 762,865.20, 1,144,816.20 and 425,905.20 is: 639,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,865.20 : 1,144,816.20 = 425,905.20 : x
  2. Step 2: Convert to fraction form
    762,865.20/1,144,816.20 = 425,905.20/x
  3. Step 3: Cross multiply
    762,865.20x = 1,144,816.20 × 425,905.20
  4. Step 4: Simplify right side
    762,865.20x = 487,583,172,624.24
  5. Step 5: Solve for x
    x = 487,583,172,624.24/762,865.20
  6. Step 6: Final answer
    x = 639,147.22

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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.