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Finding the Fourth Proportional to 647,785.20, 970,365.60 and 366,974.40

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Solution

The fourth proportional to 647,785.20, 970,365.60 and 366,974.40 is: 549,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,785.20 : 970,365.60 = 366,974.40 : x
  2. Step 2: Convert to fraction form
    647,785.20/970,365.60 = 366,974.40/x
  3. Step 3: Cross multiply
    647,785.20x = 970,365.60 × 366,974.40
  4. Step 4: Simplify right side
    647,785.20x = 356,099,333,840.64
  5. Step 5: Solve for x
    x = 356,099,333,840.64/647,785.20
  6. Step 6: Final answer
    x = 549,718.23

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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.