Home / 683,405.80-1,025,108.70-649,191.40

Finding the Fourth Proportional to 683,405.80, 1,025,108.70 and 649,191.40

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Solution

The fourth proportional to 683,405.80, 1,025,108.70 and 649,191.40 is: 973,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,405.80 : 1,025,108.70 = 649,191.40 : x
  2. Step 2: Convert to fraction form
    683,405.80/1,025,108.70 = 649,191.40/x
  3. Step 3: Cross multiply
    683,405.80x = 1,025,108.70 × 649,191.40
  4. Step 4: Simplify right side
    683,405.80x = 665,491,752,105.18
  5. Step 5: Solve for x
    x = 665,491,752,105.18/683,405.80
  6. Step 6: Final answer
    x = 973,787.10

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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.