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Finding the Fourth Proportional to 550,383.60, 825,575.40 and 390,951.30

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Solution

The fourth proportional to 550,383.60, 825,575.40 and 390,951.30 is: 586,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,383.60 : 825,575.40 = 390,951.30 : x
  2. Step 2: Convert to fraction form
    550,383.60/825,575.40 = 390,951.30/x
  3. Step 3: Cross multiply
    550,383.60x = 825,575.40 × 390,951.30
  4. Step 4: Simplify right side
    550,383.60x = 322,759,775,878.02
  5. Step 5: Solve for x
    x = 322,759,775,878.02/550,383.60
  6. Step 6: Final answer
    x = 586,426.95

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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.