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Finding the Fourth Proportional to 620,461.28, 930,696.24 and 339,825.44

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Solution

The fourth proportional to 620,461.28, 930,696.24 and 339,825.44 is: 509,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,461.28 : 930,696.24 = 339,825.44 : x
  2. Step 2: Convert to fraction form
    620,461.28/930,696.24 = 339,825.44/x
  3. Step 3: Cross multiply
    620,461.28x = 930,696.24 × 339,825.44
  4. Step 4: Simplify right side
    620,461.28x = 316,274,259,264.35
  5. Step 5: Solve for x
    x = 316,274,259,264.35/620,461.28
  6. Step 6: Final answer
    x = 509,740.53

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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.