Home / 1,209,499.80-1,813,817.44-399,734.36

Finding the Fourth Proportional to 1,209,499.80, 1,813,817.44 and 399,734.36

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Solution

The fourth proportional to 1,209,499.80, 1,813,817.44 and 399,734.36 is: 599,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,499.80 : 1,813,817.44 = 399,734.36 : x
  2. Step 2: Convert to fraction form
    1,209,499.80/1,813,817.44 = 399,734.36/x
  3. Step 3: Cross multiply
    1,209,499.80x = 1,813,817.44 × 399,734.36
  4. Step 4: Simplify right side
    1,209,499.80x = 725,045,151,767.64
  5. Step 5: Solve for x
    x = 725,045,151,767.64/1,209,499.80
  6. Step 6: Final answer
    x = 599,458.68

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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.