Home / 648,212.60-969,986.10-438,260.60

Finding the Fourth Proportional to 648,212.60, 969,986.10 and 438,260.60

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Solution

The fourth proportional to 648,212.60, 969,986.10 and 438,260.60 is: 655,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,212.60 : 969,986.10 = 438,260.60 : x
  2. Step 2: Convert to fraction form
    648,212.60/969,986.10 = 438,260.60/x
  3. Step 3: Cross multiply
    648,212.60x = 969,986.10 × 438,260.60
  4. Step 4: Simplify right side
    648,212.60x = 425,106,690,177.66
  5. Step 5: Solve for x
    x = 425,106,690,177.66/648,212.60
  6. Step 6: Final answer
    x = 655,813.68

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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.