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Finding the Fourth Proportional to 622,164.60, 933,246.90 and 385,774.20

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Solution

The fourth proportional to 622,164.60, 933,246.90 and 385,774.20 is: 578,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,164.60 : 933,246.90 = 385,774.20 : x
  2. Step 2: Convert to fraction form
    622,164.60/933,246.90 = 385,774.20/x
  3. Step 3: Cross multiply
    622,164.60x = 933,246.90 × 385,774.20
  4. Step 4: Simplify right side
    622,164.60x = 360,022,576,249.98
  5. Step 5: Solve for x
    x = 360,022,576,249.98/622,164.60
  6. Step 6: Final answer
    x = 578,661.30

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Similar ratio
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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.