Home / 1,425,438.40-1,967,105.64-780,881.92

Finding the Fourth Proportional to 1,425,438.40, 1,967,105.64 and 780,881.92

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Solution

The fourth proportional to 1,425,438.40, 1,967,105.64 and 780,881.92 is: 1,077,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,438.40 : 1,967,105.64 = 780,881.92 : x
  2. Step 2: Convert to fraction form
    1,425,438.40/1,967,105.64 = 780,881.92/x
  3. Step 3: Cross multiply
    1,425,438.40x = 1,967,105.64 × 780,881.92
  4. Step 4: Simplify right side
    1,425,438.40x = 1,536,077,229,006.03
  5. Step 5: Solve for x
    x = 1,536,077,229,006.03/1,425,438.40
  6. Step 6: Final answer
    x = 1,077,617.40

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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.