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Finding the Fourth Proportional to 536,790, 740,770.20 and 310,450.08

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Solution

The fourth proportional to 536,790, 740,770.20 and 310,450.08 is: 428,421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,790 : 740,770.20 = 310,450.08 : x
  2. Step 2: Convert to fraction form
    536,790/740,770.20 = 310,450.08/x
  3. Step 3: Cross multiply
    536,790x = 740,770.20 × 310,450.08
  4. Step 4: Simplify right side
    536,790x = 229,972,167,851.62
  5. Step 5: Solve for x
    x = 229,972,167,851.62/536,790
  6. Step 6: Final answer
    x = 428,421.11

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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.