Home / 744,777.20-1,117,311.60-318,312.20

Finding the Fourth Proportional to 744,777.20, 1,117,311.60 and 318,312.20

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Solution

The fourth proportional to 744,777.20, 1,117,311.60 and 318,312.20 is: 477,530.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,777.20 : 1,117,311.60 = 318,312.20 : x
  2. Step 2: Convert to fraction form
    744,777.20/1,117,311.60 = 318,312.20/x
  3. Step 3: Cross multiply
    744,777.20x = 1,117,311.60 × 318,312.20
  4. Step 4: Simplify right side
    744,777.20x = 355,653,913,481.52
  5. Step 5: Solve for x
    x = 355,653,913,481.52/744,777.20
  6. Step 6: Final answer
    x = 477,530.61

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Double scale
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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.