Home / 1,425,320.36-1,966,872.21-780,743.42

Finding the Fourth Proportional to 1,425,320.36, 1,966,872.21 and 780,743.42

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Solution

The fourth proportional to 1,425,320.36, 1,966,872.21 and 780,743.42 is: 1,077,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,320.36 : 1,966,872.21 = 780,743.42 : x
  2. Step 2: Convert to fraction form
    1,425,320.36/1,966,872.21 = 780,743.42/x
  3. Step 3: Cross multiply
    1,425,320.36x = 1,966,872.21 × 780,743.42
  4. Step 4: Simplify right side
    1,425,320.36x = 1,535,622,535,938.36
  5. Step 5: Solve for x
    x = 1,535,622,535,938.36/1,425,320.36
  6. Step 6: Final answer
    x = 1,077,387.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.