Home / 862,311.58-1,189,991.10-469,842.46

Finding the Fourth Proportional to 862,311.58, 1,189,991.10 and 469,842.46

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Solution

The fourth proportional to 862,311.58, 1,189,991.10 and 469,842.46 is: 648,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,311.58 : 1,189,991.10 = 469,842.46 : x
  2. Step 2: Convert to fraction form
    862,311.58/1,189,991.10 = 469,842.46/x
  3. Step 3: Cross multiply
    862,311.58x = 1,189,991.10 × 469,842.46
  4. Step 4: Simplify right side
    862,311.58x = 559,108,345,802.11
  5. Step 5: Solve for x
    x = 559,108,345,802.11/862,311.58
  6. Step 6: Final answer
    x = 648,383.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.