Home / 709,821.20-1,065,509.40-394,893.20

Finding the Fourth Proportional to 709,821.20, 1,065,509.40 and 394,893.20

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Solution

The fourth proportional to 709,821.20, 1,065,509.40 and 394,893.20 is: 592,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,821.20 : 1,065,509.40 = 394,893.20 : x
  2. Step 2: Convert to fraction form
    709,821.20/1,065,509.40 = 394,893.20/x
  3. Step 3: Cross multiply
    709,821.20x = 1,065,509.40 × 394,893.20
  4. Step 4: Simplify right side
    709,821.20x = 420,762,416,596.08
  5. Step 5: Solve for x
    x = 420,762,416,596.08/709,821.20
  6. Step 6: Final answer
    x = 592,772.40

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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.