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Finding the Fourth Proportional to 647,739.20, 970,296.60 and 366,928.40

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Solution

The fourth proportional to 647,739.20, 970,296.60 and 366,928.40 is: 549,649.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,739.20 : 970,296.60 = 366,928.40 : x
  2. Step 2: Convert to fraction form
    647,739.20/970,296.60 = 366,928.40/x
  3. Step 3: Cross multiply
    647,739.20x = 970,296.60 × 366,928.40
  4. Step 4: Simplify right side
    647,739.20x = 356,029,378,963.44
  5. Step 5: Solve for x
    x = 356,029,378,963.44/647,739.20
  6. Step 6: Final answer
    x = 549,649.27

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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.