Home / 711,247.40-1,067,562.30-431,311.40

Finding the Fourth Proportional to 711,247.40, 1,067,562.30 and 431,311.40

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Solution

The fourth proportional to 711,247.40, 1,067,562.30 and 431,311.40 is: 647,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,247.40 : 1,067,562.30 = 431,311.40 : x
  2. Step 2: Convert to fraction form
    711,247.40/1,067,562.30 = 431,311.40/x
  3. Step 3: Cross multiply
    711,247.40x = 1,067,562.30 × 431,311.40
  4. Step 4: Simplify right side
    711,247.40x = 460,451,790,200.22
  5. Step 5: Solve for x
    x = 460,451,790,200.22/711,247.40
  6. Step 6: Final answer
    x = 647,386.25

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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.