Home / 1,425,563.28-2,138,664-478,908.12

Finding the Fourth Proportional to 1,425,563.28, 2,138,664 and 478,908.12

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Solution

The fourth proportional to 1,425,563.28, 2,138,664 and 478,908.12 is: 718,469.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,563.28 : 2,138,664 = 478,908.12 : x
  2. Step 2: Convert to fraction form
    1,425,563.28/2,138,664 = 478,908.12/x
  3. Step 3: Cross multiply
    1,425,563.28x = 2,138,664 × 478,908.12
  4. Step 4: Simplify right side
    1,425,563.28x = 1,024,223,555,551.68
  5. Step 5: Solve for x
    x = 1,024,223,555,551.68/1,425,563.28
  6. Step 6: Final answer
    x = 718,469.37

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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.