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Finding the Fourth Proportional to 443,777.60, 665,666.40 and 368,982.20

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Solution

The fourth proportional to 443,777.60, 665,666.40 and 368,982.20 is: 553,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,777.60 : 665,666.40 = 368,982.20 : x
  2. Step 2: Convert to fraction form
    443,777.60/665,666.40 = 368,982.20/x
  3. Step 3: Cross multiply
    443,777.60x = 665,666.40 × 368,982.20
  4. Step 4: Simplify right side
    443,777.60x = 245,619,052,738.08
  5. Step 5: Solve for x
    x = 245,619,052,738.08/443,777.60
  6. Step 6: Final answer
    x = 553,473.30

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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.