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Finding the Fourth Proportional to 616,564.56, 850,858.80 and 361,915.74

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Solution

The fourth proportional to 616,564.56, 850,858.80 and 361,915.74 is: 499,443.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,564.56 : 850,858.80 = 361,915.74 : x
  2. Step 2: Convert to fraction form
    616,564.56/850,858.80 = 361,915.74/x
  3. Step 3: Cross multiply
    616,564.56x = 850,858.80 × 361,915.74
  4. Step 4: Simplify right side
    616,564.56x = 307,939,192,237.51
  5. Step 5: Solve for x
    x = 307,939,192,237.51/616,564.56
  6. Step 6: Final answer
    x = 499,443.55

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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.