Home / 436,579.88-654,869.81-121,036.78

Finding the Fourth Proportional to 436,579.88, 654,869.81 and 121,036.78

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Solution

The fourth proportional to 436,579.88, 654,869.81 and 121,036.78 is: 181,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,579.88 : 654,869.81 = 121,036.78 : x
  2. Step 2: Convert to fraction form
    436,579.88/654,869.81 = 121,036.78/x
  3. Step 3: Cross multiply
    436,579.88x = 654,869.81 × 121,036.78
  4. Step 4: Simplify right side
    436,579.88x = 79,263,334,242.79
  5. Step 5: Solve for x
    x = 79,263,334,242.79/436,579.88
  6. Step 6: Final answer
    x = 181,555.17

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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.