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Finding the Fourth Proportional to 447,929.64, 618,096.74 and 275,820.20

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Solution

The fourth proportional to 447,929.64, 618,096.74 and 275,820.20 is: 380,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,929.64 : 618,096.74 = 275,820.20 : x
  2. Step 2: Convert to fraction form
    447,929.64/618,096.74 = 275,820.20/x
  3. Step 3: Cross multiply
    447,929.64x = 618,096.74 × 275,820.20
  4. Step 4: Simplify right side
    447,929.64x = 170,483,566,446.15
  5. Step 5: Solve for x
    x = 170,483,566,446.15/447,929.64
  6. Step 6: Final answer
    x = 380,603.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.