Home / 1,425,128.42-1,966,677.90-780,589.56

Finding the Fourth Proportional to 1,425,128.42, 1,966,677.90 and 780,589.56

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Solution

The fourth proportional to 1,425,128.42, 1,966,677.90 and 780,589.56 is: 1,077,213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,128.42 : 1,966,677.90 = 780,589.56 : x
  2. Step 2: Convert to fraction form
    1,425,128.42/1,966,677.90 = 780,589.56/x
  3. Step 3: Cross multiply
    1,425,128.42x = 1,966,677.90 × 780,589.56
  4. Step 4: Simplify right side
    1,425,128.42x = 1,535,168,236,622.72
  5. Step 5: Solve for x
    x = 1,535,168,236,622.72/1,425,128.42
  6. Step 6: Final answer
    x = 1,077,213.97

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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.