Home / 1,259,939.07-1,889,916.13-313,309.78

Finding the Fourth Proportional to 1,259,939.07, 1,889,916.13 and 313,309.78

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Solution

The fourth proportional to 1,259,939.07, 1,889,916.13 and 313,309.78 is: 469,966.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,939.07 : 1,889,916.13 = 313,309.78 : x
  2. Step 2: Convert to fraction form
    1,259,939.07/1,889,916.13 = 313,309.78/x
  3. Step 3: Cross multiply
    1,259,939.07x = 1,889,916.13 × 313,309.78
  4. Step 4: Simplify right side
    1,259,939.07x = 592,129,206,908.75
  5. Step 5: Solve for x
    x = 592,129,206,908.75/1,259,939.07
  6. Step 6: Final answer
    x = 469,966.54

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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.