Home / 570,821.58-787,739.18-312,704.55

Finding the Fourth Proportional to 570,821.58, 787,739.18 and 312,704.55

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Solution

The fourth proportional to 570,821.58, 787,739.18 and 312,704.55 is: 431,535.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,821.58 : 787,739.18 = 312,704.55 : x
  2. Step 2: Convert to fraction form
    570,821.58/787,739.18 = 312,704.55/x
  3. Step 3: Cross multiply
    570,821.58x = 787,739.18 × 312,704.55
  4. Step 4: Simplify right side
    570,821.58x = 246,329,624,235.75
  5. Step 5: Solve for x
    x = 246,329,624,235.75/570,821.58
  6. Step 6: Final answer
    x = 431,535.23

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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.