Home / 1,239,405.12-1,858,913.28-340,914.24

Finding the Fourth Proportional to 1,239,405.12, 1,858,913.28 and 340,914.24

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Solution

The fourth proportional to 1,239,405.12, 1,858,913.28 and 340,914.24 is: 511,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,405.12 : 1,858,913.28 = 340,914.24 : x
  2. Step 2: Convert to fraction form
    1,239,405.12/1,858,913.28 = 340,914.24/x
  3. Step 3: Cross multiply
    1,239,405.12x = 1,858,913.28 × 340,914.24
  4. Step 4: Simplify right side
    1,239,405.12x = 633,730,008,077.11
  5. Step 5: Solve for x
    x = 633,730,008,077.11/1,239,405.12
  6. Step 6: Final answer
    x = 511,317.89

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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.