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Finding the Fourth Proportional to 665,227.54, 918,012.45 and 363,423.70

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Solution

The fourth proportional to 665,227.54, 918,012.45 and 363,423.70 is: 501,523.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,227.54 : 918,012.45 = 363,423.70 : x
  2. Step 2: Convert to fraction form
    665,227.54/918,012.45 = 363,423.70/x
  3. Step 3: Cross multiply
    665,227.54x = 918,012.45 × 363,423.70
  4. Step 4: Simplify right side
    665,227.54x = 333,627,481,225.07
  5. Step 5: Solve for x
    x = 333,627,481,225.07/665,227.54
  6. Step 6: Final answer
    x = 501,523.86

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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.