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Finding the Fourth Proportional to 691,640.25, 955,250.87 and 464,892.09

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Solution

The fourth proportional to 691,640.25, 955,250.87 and 464,892.09 is: 642,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,640.25 : 955,250.87 = 464,892.09 : x
  2. Step 2: Convert to fraction form
    691,640.25/955,250.87 = 464,892.09/x
  3. Step 3: Cross multiply
    691,640.25x = 955,250.87 × 464,892.09
  4. Step 4: Simplify right side
    691,640.25x = 444,088,573,428.62
  5. Step 5: Solve for x
    x = 444,088,573,428.62/691,640.25
  6. Step 6: Final answer
    x = 642,080.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.