Home / 1,389,412.80-2,081,008.80-1,072,843.20

Finding the Fourth Proportional to 1,389,412.80, 2,081,008.80 and 1,072,843.20

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Solution

The fourth proportional to 1,389,412.80, 2,081,008.80 and 1,072,843.20 is: 1,606,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,412.80 : 2,081,008.80 = 1,072,843.20 : x
  2. Step 2: Convert to fraction form
    1,389,412.80/2,081,008.80 = 1,072,843.20/x
  3. Step 3: Cross multiply
    1,389,412.80x = 2,081,008.80 × 1,072,843.20
  4. Step 4: Simplify right side
    1,389,412.80x = 2,232,596,140,220.16
  5. Step 5: Solve for x
    x = 2,232,596,140,220.16/1,389,412.80
  6. Step 6: Final answer
    x = 1,606,863.09

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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.