Home / 698,576.20-1,047,864.30-485,999.80

Finding the Fourth Proportional to 698,576.20, 1,047,864.30 and 485,999.80

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Solution

The fourth proportional to 698,576.20, 1,047,864.30 and 485,999.80 is: 728,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,576.20 : 1,047,864.30 = 485,999.80 : x
  2. Step 2: Convert to fraction form
    698,576.20/1,047,864.30 = 485,999.80/x
  3. Step 3: Cross multiply
    698,576.20x = 1,047,864.30 × 485,999.80
  4. Step 4: Simplify right side
    698,576.20x = 509,261,840,227.14
  5. Step 5: Solve for x
    x = 509,261,840,227.14/698,576.20
  6. Step 6: Final answer
    x = 728,999.70

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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.