Home / 1,078,719.40-1,619,410.30-679,359.40

Finding the Fourth Proportional to 1,078,719.40, 1,619,410.30 and 679,359.40

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Solution

The fourth proportional to 1,078,719.40, 1,619,410.30 and 679,359.40 is: 1,019,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,719.40 : 1,619,410.30 = 679,359.40 : x
  2. Step 2: Convert to fraction form
    1,078,719.40/1,619,410.30 = 679,359.40/x
  3. Step 3: Cross multiply
    1,078,719.40x = 1,619,410.30 × 679,359.40
  4. Step 4: Simplify right side
    1,078,719.40x = 1,100,161,609,761.82
  5. Step 5: Solve for x
    x = 1,100,161,609,761.82/1,078,719.40
  6. Step 6: Final answer
    x = 1,019,877.47

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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.