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Finding the Fourth Proportional to 605,718.45, 908,577.68 and 290,012.85

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Solution

The fourth proportional to 605,718.45, 908,577.68 and 290,012.85 is: 435,019.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,718.45 : 908,577.68 = 290,012.85 : x
  2. Step 2: Convert to fraction form
    605,718.45/908,577.68 = 290,012.85/x
  3. Step 3: Cross multiply
    605,718.45x = 908,577.68 × 290,012.85
  4. Step 4: Simplify right side
    605,718.45x = 263,499,200,973.12
  5. Step 5: Solve for x
    x = 263,499,200,973.12/605,718.45
  6. Step 6: Final answer
    x = 435,019.28

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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.