Home / 1,209,055.88-1,813,379.70-399,189.80

Finding the Fourth Proportional to 1,209,055.88, 1,813,379.70 and 399,189.80

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Solution

The fourth proportional to 1,209,055.88, 1,813,379.70 and 399,189.80 is: 598,717.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,055.88 : 1,813,379.70 = 399,189.80 : x
  2. Step 2: Convert to fraction form
    1,209,055.88/1,813,379.70 = 399,189.80/x
  3. Step 3: Cross multiply
    1,209,055.88x = 1,813,379.70 × 399,189.80
  4. Step 4: Simplify right side
    1,209,055.88x = 723,882,679,767.06
  5. Step 5: Solve for x
    x = 723,882,679,767.06/1,209,055.88
  6. Step 6: Final answer
    x = 598,717.31

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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.