Home / 726,520.87-1,089,794.67-316,148.78

Finding the Fourth Proportional to 726,520.87, 1,089,794.67 and 316,148.78

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Solution

The fourth proportional to 726,520.87, 1,089,794.67 and 316,148.78 is: 474,228.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,520.87 : 1,089,794.67 = 316,148.78 : x
  2. Step 2: Convert to fraction form
    726,520.87/1,089,794.67 = 316,148.78/x
  3. Step 3: Cross multiply
    726,520.87x = 1,089,794.67 × 316,148.78
  4. Step 4: Simplify right side
    726,520.87x = 344,537,252,558.17
  5. Step 5: Solve for x
    x = 344,537,252,558.17/726,520.87
  6. Step 6: Final answer
    x = 474,228.98

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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.