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Finding the Fourth Proportional to 624,731.40, 936,405.90 and 344,449.80

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Solution

The fourth proportional to 624,731.40, 936,405.90 and 344,449.80 is: 516,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,731.40 : 936,405.90 = 344,449.80 : x
  2. Step 2: Convert to fraction form
    624,731.40/936,405.90 = 344,449.80/x
  3. Step 3: Cross multiply
    624,731.40x = 936,405.90 × 344,449.80
  4. Step 4: Simplify right side
    624,731.40x = 322,544,824,973.82
  5. Step 5: Solve for x
    x = 322,544,824,973.82/624,731.40
  6. Step 6: Final answer
    x = 516,293.60

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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.