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Finding the Fourth Proportional to 405,846.90, 608,770.35 and 265,763.70

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Solution

The fourth proportional to 405,846.90, 608,770.35 and 265,763.70 is: 398,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,846.90 : 608,770.35 = 265,763.70 : x
  2. Step 2: Convert to fraction form
    405,846.90/608,770.35 = 265,763.70/x
  3. Step 3: Cross multiply
    405,846.90x = 608,770.35 × 265,763.70
  4. Step 4: Simplify right side
    405,846.90x = 161,789,060,666.30
  5. Step 5: Solve for x
    x = 161,789,060,666.30/405,846.90
  6. Step 6: Final answer
    x = 398,645.55

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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.