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Finding the Fourth Proportional to 648,603.60, 970,572.60 and 438,651.60

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Solution

The fourth proportional to 648,603.60, 970,572.60 and 438,651.60 is: 656,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,603.60 : 970,572.60 = 438,651.60 : x
  2. Step 2: Convert to fraction form
    648,603.60/970,572.60 = 438,651.60/x
  3. Step 3: Cross multiply
    648,603.60x = 970,572.60 × 438,651.60
  4. Step 4: Simplify right side
    648,603.60x = 425,743,223,906.16
  5. Step 5: Solve for x
    x = 425,743,223,906.16/648,603.60
  6. Step 6: Final answer
    x = 656,399.72

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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.