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Finding the Fourth Proportional to 644,820.80, 966,885.60 and 270,420.80

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Solution

The fourth proportional to 644,820.80, 966,885.60 and 270,420.80 is: 405,486.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,820.80 : 966,885.60 = 270,420.80 : x
  2. Step 2: Convert to fraction form
    644,820.80/966,885.60 = 270,420.80/x
  3. Step 3: Cross multiply
    644,820.80x = 966,885.60 × 270,420.80
  4. Step 4: Simplify right side
    644,820.80x = 261,465,977,460.48
  5. Step 5: Solve for x
    x = 261,465,977,460.48/644,820.80
  6. Step 6: Final answer
    x = 405,486.26

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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.