Home / 1,425,393.78-1,967,043.94-780,837.20

Finding the Fourth Proportional to 1,425,393.78, 1,967,043.94 and 780,837.20

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Solution

The fourth proportional to 1,425,393.78, 1,967,043.94 and 780,837.20 is: 1,077,555.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,393.78 : 1,967,043.94 = 780,837.20 : x
  2. Step 2: Convert to fraction form
    1,425,393.78/1,967,043.94 = 780,837.20/x
  3. Step 3: Cross multiply
    1,425,393.78x = 1,967,043.94 × 780,837.20
  4. Step 4: Simplify right side
    1,425,393.78x = 1,535,941,082,386.57
  5. Step 5: Solve for x
    x = 1,535,941,082,386.57/1,425,393.78
  6. Step 6: Final answer
    x = 1,077,555.62

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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.