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Finding the Fourth Proportional to 3,315,745.71, 4,973,618.25 and 919,590.30

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Solution

The fourth proportional to 3,315,745.71, 4,973,618.25 and 919,590.30 is: 1,379,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,745.71 : 4,973,618.25 = 919,590.30 : x
  2. Step 2: Convert to fraction form
    3,315,745.71/4,973,618.25 = 919,590.30/x
  3. Step 3: Cross multiply
    3,315,745.71x = 4,973,618.25 × 919,590.30
  4. Step 4: Simplify right side
    3,315,745.71x = 4,573,691,098,602.98
  5. Step 5: Solve for x
    x = 4,573,691,098,602.98/3,315,745.71
  6. Step 6: Final answer
    x = 1,379,385.36

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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.