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Finding the Fourth Proportional to 615,027.60, 920,791.80 and 545,043.60

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Solution

The fourth proportional to 615,027.60, 920,791.80 and 545,043.60 is: 816,014.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,027.60 : 920,791.80 = 545,043.60 : x
  2. Step 2: Convert to fraction form
    615,027.60/920,791.80 = 545,043.60/x
  3. Step 3: Cross multiply
    615,027.60x = 920,791.80 × 545,043.60
  4. Step 4: Simplify right side
    615,027.60x = 501,871,677,522.48
  5. Step 5: Solve for x
    x = 501,871,677,522.48/615,027.60
  6. Step 6: Final answer
    x = 816,014.89

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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.