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Finding the Fourth Proportional to 412,322.60, 618,483.90 and 367,999.40

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Solution

The fourth proportional to 412,322.60, 618,483.90 and 367,999.40 is: 551,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,322.60 : 618,483.90 = 367,999.40 : x
  2. Step 2: Convert to fraction form
    412,322.60/618,483.90 = 367,999.40/x
  3. Step 3: Cross multiply
    412,322.60x = 618,483.90 × 367,999.40
  4. Step 4: Simplify right side
    412,322.60x = 227,601,704,109.66
  5. Step 5: Solve for x
    x = 227,601,704,109.66/412,322.60
  6. Step 6: Final answer
    x = 551,999.10

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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.