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Finding the Fourth Proportional to 432,615.60, 648,923.40 and 401,122.80

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Solution

The fourth proportional to 432,615.60, 648,923.40 and 401,122.80 is: 601,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,615.60 : 648,923.40 = 401,122.80 : x
  2. Step 2: Convert to fraction form
    432,615.60/648,923.40 = 401,122.80/x
  3. Step 3: Cross multiply
    432,615.60x = 648,923.40 × 401,122.80
  4. Step 4: Simplify right side
    432,615.60x = 260,297,971,193.52
  5. Step 5: Solve for x
    x = 260,297,971,193.52/432,615.60
  6. Step 6: Final answer
    x = 601,684.20

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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.