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Finding the Fourth Proportional to 648,213.60, 972,028.80 and 293,044.80

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Solution

The fourth proportional to 648,213.60, 972,028.80 and 293,044.80 is: 439,435.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,213.60 : 972,028.80 = 293,044.80 : x
  2. Step 2: Convert to fraction form
    648,213.60/972,028.80 = 293,044.80/x
  3. Step 3: Cross multiply
    648,213.60x = 972,028.80 × 293,044.80
  4. Step 4: Simplify right side
    648,213.60x = 284,847,985,290.24
  5. Step 5: Solve for x
    x = 284,847,985,290.24/648,213.60
  6. Step 6: Final answer
    x = 439,435.37

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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.