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Finding the Fourth Proportional to 622,419.60, 933,410.70 and 285,621.60

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Solution

The fourth proportional to 622,419.60, 933,410.70 and 285,621.60 is: 428,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,419.60 : 933,410.70 = 285,621.60 : x
  2. Step 2: Convert to fraction form
    622,419.60/933,410.70 = 285,621.60/x
  3. Step 3: Cross multiply
    622,419.60x = 933,410.70 × 285,621.60
  4. Step 4: Simplify right side
    622,419.60x = 266,602,257,591.12
  5. Step 5: Solve for x
    x = 266,602,257,591.12/622,419.60
  6. Step 6: Final answer
    x = 428,332.04

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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.