Home / 698,467.20-1,047,700.80-485,890.80

Finding the Fourth Proportional to 698,467.20, 1,047,700.80 and 485,890.80

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Solution

The fourth proportional to 698,467.20, 1,047,700.80 and 485,890.80 is: 728,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,467.20 : 1,047,700.80 = 485,890.80 : x
  2. Step 2: Convert to fraction form
    698,467.20/1,047,700.80 = 485,890.80/x
  3. Step 3: Cross multiply
    698,467.20x = 1,047,700.80 × 485,890.80
  4. Step 4: Simplify right side
    698,467.20x = 509,068,179,872.64
  5. Step 5: Solve for x
    x = 509,068,179,872.64/698,467.20
  6. Step 6: Final answer
    x = 728,836.20

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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.