Home / 1,382,739.80-2,074,109.70-815,869.40

Finding the Fourth Proportional to 1,382,739.80, 2,074,109.70 and 815,869.40

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Solution

The fourth proportional to 1,382,739.80, 2,074,109.70 and 815,869.40 is: 1,223,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,739.80 : 2,074,109.70 = 815,869.40 : x
  2. Step 2: Convert to fraction form
    1,382,739.80/2,074,109.70 = 815,869.40/x
  3. Step 3: Cross multiply
    1,382,739.80x = 2,074,109.70 × 815,869.40
  4. Step 4: Simplify right side
    1,382,739.80x = 1,692,202,636,473.18
  5. Step 5: Solve for x
    x = 1,692,202,636,473.18/1,382,739.80
  6. Step 6: Final answer
    x = 1,223,804.10

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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.