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Finding the Fourth Proportional to 550,420.29, 759,611.39 and 308,683.66

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Solution

The fourth proportional to 550,420.29, 759,611.39 and 308,683.66 is: 426,001.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,420.29 : 759,611.39 = 308,683.66 : x
  2. Step 2: Convert to fraction form
    550,420.29/759,611.39 = 308,683.66/x
  3. Step 3: Cross multiply
    550,420.29x = 759,611.39 × 308,683.66
  4. Step 4: Simplify right side
    550,420.29x = 234,479,624,629.23
  5. Step 5: Solve for x
    x = 234,479,624,629.23/550,420.29
  6. Step 6: Final answer
    x = 426,001.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.