Home / 1,306,000.45-1,959,131.90-485,558.34

Finding the Fourth Proportional to 1,306,000.45, 1,959,131.90 and 485,558.34

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Solution

The fourth proportional to 1,306,000.45, 1,959,131.90 and 485,558.34 is: 728,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,000.45 : 1,959,131.90 = 485,558.34 : x
  2. Step 2: Convert to fraction form
    1,306,000.45/1,959,131.90 = 485,558.34/x
  3. Step 3: Cross multiply
    1,306,000.45x = 1,959,131.90 × 485,558.34
  4. Step 4: Simplify right side
    1,306,000.45x = 951,272,833,205.05
  5. Step 5: Solve for x
    x = 951,272,833,205.05/1,306,000.45
  6. Step 6: Final answer
    x = 728,386.30

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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.