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Finding the Fourth Proportional to 493,478.80, 739,764.60 and 493,176.40

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Solution

The fourth proportional to 493,478.80, 739,764.60 and 493,176.40 is: 739,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,478.80 : 739,764.60 = 493,176.40 : x
  2. Step 2: Convert to fraction form
    493,478.80/739,764.60 = 493,176.40/x
  3. Step 3: Cross multiply
    493,478.80x = 739,764.60 × 493,176.40
  4. Step 4: Simplify right side
    493,478.80x = 364,834,442,275.44
  5. Step 5: Solve for x
    x = 364,834,442,275.44/493,478.80
  6. Step 6: Final answer
    x = 739,311.28

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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.