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Finding the Fourth Proportional to 554,458.60, 829,611.90 and 394,903.40

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Solution

The fourth proportional to 554,458.60, 829,611.90 and 394,903.40 is: 590,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,458.60 : 829,611.90 = 394,903.40 : x
  2. Step 2: Convert to fraction form
    554,458.60/829,611.90 = 394,903.40/x
  3. Step 3: Cross multiply
    554,458.60x = 829,611.90 × 394,903.40
  4. Step 4: Simplify right side
    554,458.60x = 327,616,559,990.46
  5. Step 5: Solve for x
    x = 327,616,559,990.46/554,458.60
  6. Step 6: Final answer
    x = 590,876.51

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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.