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Finding the Fourth Proportional to 624,739.20, 937,108.80 and 309,811.20

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Solution

The fourth proportional to 624,739.20, 937,108.80 and 309,811.20 is: 464,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,739.20 : 937,108.80 = 309,811.20 : x
  2. Step 2: Convert to fraction form
    624,739.20/937,108.80 = 309,811.20/x
  3. Step 3: Cross multiply
    624,739.20x = 937,108.80 × 309,811.20
  4. Step 4: Simplify right side
    624,739.20x = 290,326,801,858.56
  5. Step 5: Solve for x
    x = 290,326,801,858.56/624,739.20
  6. Step 6: Final answer
    x = 464,716.80

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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.