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Finding the Fourth Proportional to 389,474.90, 580,940.03 and 353,597.16

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Solution

The fourth proportional to 389,474.90, 580,940.03 and 353,597.16 is: 527,424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,474.90 : 580,940.03 = 353,597.16 : x
  2. Step 2: Convert to fraction form
    389,474.90/580,940.03 = 353,597.16/x
  3. Step 3: Cross multiply
    389,474.90x = 580,940.03 × 353,597.16
  4. Step 4: Simplify right side
    389,474.90x = 205,418,742,970.33
  5. Step 5: Solve for x
    x = 205,418,742,970.33/389,474.90
  6. Step 6: Final answer
    x = 527,424.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.