Home / 840,403.88-1,260,616.76-279,438.38

Finding the Fourth Proportional to 840,403.88, 1,260,616.76 and 279,438.38

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Solution

The fourth proportional to 840,403.88, 1,260,616.76 and 279,438.38 is: 419,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,403.88 : 1,260,616.76 = 279,438.38 : x
  2. Step 2: Convert to fraction form
    840,403.88/1,260,616.76 = 279,438.38/x
  3. Step 3: Cross multiply
    840,403.88x = 1,260,616.76 × 279,438.38
  4. Step 4: Simplify right side
    840,403.88x = 352,264,697,514.97
  5. Step 5: Solve for x
    x = 352,264,697,514.97/840,403.88
  6. Step 6: Final answer
    x = 419,161.20

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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.