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Finding the Fourth Proportional to 658,621, 908,912.82 and 403,824.52

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Solution

The fourth proportional to 658,621, 908,912.82 and 403,824.52 is: 557,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,621 : 908,912.82 = 403,824.52 : x
  2. Step 2: Convert to fraction form
    658,621/908,912.82 = 403,824.52/x
  3. Step 3: Cross multiply
    658,621x = 908,912.82 × 403,824.52
  4. Step 4: Simplify right side
    658,621x = 367,041,283,258.35
  5. Step 5: Solve for x
    x = 367,041,283,258.35/658,621
  6. Step 6: Final answer
    x = 557,287.55

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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.