Home / 763,940.20-1,145,132.70-448,234.60

Finding the Fourth Proportional to 763,940.20, 1,145,132.70 and 448,234.60

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Solution

The fourth proportional to 763,940.20, 1,145,132.70 and 448,234.60 is: 671,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,940.20 : 1,145,132.70 = 448,234.60 : x
  2. Step 2: Convert to fraction form
    763,940.20/1,145,132.70 = 448,234.60/x
  3. Step 3: Cross multiply
    763,940.20x = 1,145,132.70 × 448,234.60
  4. Step 4: Simplify right side
    763,940.20x = 513,288,097,731.42
  5. Step 5: Solve for x
    x = 513,288,097,731.42/763,940.20
  6. Step 6: Final answer
    x = 671,895.65

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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.