Home / 1,425,872.80-2,138,809.20-478,928.80

Finding the Fourth Proportional to 1,425,872.80, 2,138,809.20 and 478,928.80

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Solution

The fourth proportional to 1,425,872.80, 2,138,809.20 and 478,928.80 is: 718,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,872.80 : 2,138,809.20 = 478,928.80 : x
  2. Step 2: Convert to fraction form
    1,425,872.80/2,138,809.20 = 478,928.80/x
  3. Step 3: Cross multiply
    1,425,872.80x = 2,138,809.20 × 478,928.80
  4. Step 4: Simplify right side
    1,425,872.80x = 1,024,337,323,584.96
  5. Step 5: Solve for x
    x = 1,024,337,323,584.96/1,425,872.80
  6. Step 6: Final answer
    x = 718,393.20

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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.