Home / 858,147.18-1,287,178.97-318,508.50

Finding the Fourth Proportional to 858,147.18, 1,287,178.97 and 318,508.50

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Solution

The fourth proportional to 858,147.18, 1,287,178.97 and 318,508.50 is: 477,747.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,147.18 : 1,287,178.97 = 318,508.50 : x
  2. Step 2: Convert to fraction form
    858,147.18/1,287,178.97 = 318,508.50/x
  3. Step 3: Cross multiply
    858,147.18x = 1,287,178.97 × 318,508.50
  4. Step 4: Simplify right side
    858,147.18x = 409,977,446,200.62
  5. Step 5: Solve for x
    x = 409,977,446,200.62/858,147.18
  6. Step 6: Final answer
    x = 477,747.24

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1.5x scale

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.