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Finding the Fourth Proportional to 648,419.60, 970,296.60 and 438,467.60

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Solution

The fourth proportional to 648,419.60, 970,296.60 and 438,467.60 is: 656,123.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,419.60 : 970,296.60 = 438,467.60 : x
  2. Step 2: Convert to fraction form
    648,419.60/970,296.60 = 438,467.60/x
  3. Step 3: Cross multiply
    648,419.60x = 970,296.60 × 438,467.60
  4. Step 4: Simplify right side
    648,419.60x = 425,443,621,490.16
  5. Step 5: Solve for x
    x = 425,443,621,490.16/648,419.60
  6. Step 6: Final answer
    x = 656,123.94

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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.