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Finding the Fourth Proportional to 647,085.60, 970,628.40 and 488,455.20

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Solution

The fourth proportional to 647,085.60, 970,628.40 and 488,455.20 is: 732,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,085.60 : 970,628.40 = 488,455.20 : x
  2. Step 2: Convert to fraction form
    647,085.60/970,628.40 = 488,455.20/x
  3. Step 3: Cross multiply
    647,085.60x = 970,628.40 × 488,455.20
  4. Step 4: Simplify right side
    647,085.60x = 474,108,489,247.68
  5. Step 5: Solve for x
    x = 474,108,489,247.68/647,085.60
  6. Step 6: Final answer
    x = 732,682.80

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Similar ratio
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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.