Home / 743,855.40-1,115,783.10-519,906.60

Finding the Fourth Proportional to 743,855.40, 1,115,783.10 and 519,906.60

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Solution

The fourth proportional to 743,855.40, 1,115,783.10 and 519,906.60 is: 779,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,855.40 : 1,115,783.10 = 519,906.60 : x
  2. Step 2: Convert to fraction form
    743,855.40/1,115,783.10 = 519,906.60/x
  3. Step 3: Cross multiply
    743,855.40x = 1,115,783.10 × 519,906.60
  4. Step 4: Simplify right side
    743,855.40x = 580,102,997,858.46
  5. Step 5: Solve for x
    x = 580,102,997,858.46/743,855.40
  6. Step 6: Final answer
    x = 779,859.90

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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.