Home / 747,940.70-1,121,911.05-667,070.30

Finding the Fourth Proportional to 747,940.70, 1,121,911.05 and 667,070.30

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Solution

The fourth proportional to 747,940.70, 1,121,911.05 and 667,070.30 is: 1,000,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,940.70 : 1,121,911.05 = 667,070.30 : x
  2. Step 2: Convert to fraction form
    747,940.70/1,121,911.05 = 667,070.30/x
  3. Step 3: Cross multiply
    747,940.70x = 1,121,911.05 × 667,070.30
  4. Step 4: Simplify right side
    747,940.70x = 748,393,540,696.82
  5. Step 5: Solve for x
    x = 748,393,540,696.82/747,940.70
  6. Step 6: Final answer
    x = 1,000,605.45

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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.