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Finding the Fourth Proportional to 611,745.20, 917,617.80 and 601,247.60

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Solution

The fourth proportional to 611,745.20, 917,617.80 and 601,247.60 is: 901,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,745.20 : 917,617.80 = 601,247.60 : x
  2. Step 2: Convert to fraction form
    611,745.20/917,617.80 = 601,247.60/x
  3. Step 3: Cross multiply
    611,745.20x = 917,617.80 × 601,247.60
  4. Step 4: Simplify right side
    611,745.20x = 551,715,499,967.28
  5. Step 5: Solve for x
    x = 551,715,499,967.28/611,745.20
  6. Step 6: Final answer
    x = 901,871.40

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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.