Home / 858,148.18-1,287,180.46-318,509.50

Finding the Fourth Proportional to 858,148.18, 1,287,180.46 and 318,509.50

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Solution

The fourth proportional to 858,148.18, 1,287,180.46 and 318,509.50 is: 477,748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,148.18 : 1,287,180.46 = 318,509.50 : x
  2. Step 2: Convert to fraction form
    858,148.18/1,287,180.46 = 318,509.50/x
  3. Step 3: Cross multiply
    858,148.18x = 1,287,180.46 × 318,509.50
  4. Step 4: Simplify right side
    858,148.18x = 409,979,204,724.37
  5. Step 5: Solve for x
    x = 409,979,204,724.37/858,148.18
  6. Step 6: Final answer
    x = 477,748.73

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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.