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Finding the Fourth Proportional to 412,539.02, 618,809.10 and 113,022.20

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Solution

The fourth proportional to 412,539.02, 618,809.10 and 113,022.20 is: 169,533.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,539.02 : 618,809.10 = 113,022.20 : x
  2. Step 2: Convert to fraction form
    412,539.02/618,809.10 = 113,022.20/x
  3. Step 3: Cross multiply
    412,539.02x = 618,809.10 × 113,022.20
  4. Step 4: Simplify right side
    412,539.02x = 69,939,165,862.02
  5. Step 5: Solve for x
    x = 69,939,165,862.02/412,539.02
  6. Step 6: Final answer
    x = 169,533.46

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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.