Home / 762,861.20-1,144,810.20-425,901.20

Finding the Fourth Proportional to 762,861.20, 1,144,810.20 and 425,901.20

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Solution

The fourth proportional to 762,861.20, 1,144,810.20 and 425,901.20 is: 639,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,861.20 : 1,144,810.20 = 425,901.20 : x
  2. Step 2: Convert to fraction form
    762,861.20/1,144,810.20 = 425,901.20/x
  3. Step 3: Cross multiply
    762,861.20x = 1,144,810.20 × 425,901.20
  4. Step 4: Simplify right side
    762,861.20x = 487,576,037,952.24
  5. Step 5: Solve for x
    x = 487,576,037,952.24/762,861.20
  6. Step 6: Final answer
    x = 639,141.22

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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.