Home / 1,425,883.80-2,138,825.70-478,939.80

Finding the Fourth Proportional to 1,425,883.80, 2,138,825.70 and 478,939.80

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Solution

The fourth proportional to 1,425,883.80, 2,138,825.70 and 478,939.80 is: 718,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,883.80 : 2,138,825.70 = 478,939.80 : x
  2. Step 2: Convert to fraction form
    1,425,883.80/2,138,825.70 = 478,939.80/x
  3. Step 3: Cross multiply
    1,425,883.80x = 2,138,825.70 × 478,939.80
  4. Step 4: Simplify right side
    1,425,883.80x = 1,024,368,752,992.86
  5. Step 5: Solve for x
    x = 1,024,368,752,992.86/1,425,883.80
  6. Step 6: Final answer
    x = 718,409.70

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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.