Home / 908,396.21-1,362,805.40-309,362.57

Finding the Fourth Proportional to 908,396.21, 1,362,805.40 and 309,362.57

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Solution

The fourth proportional to 908,396.21, 1,362,805.40 and 309,362.57 is: 464,115.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,396.21 : 1,362,805.40 = 309,362.57 : x
  2. Step 2: Convert to fraction form
    908,396.21/1,362,805.40 = 309,362.57/x
  3. Step 3: Cross multiply
    908,396.21x = 1,362,805.40 × 309,362.57
  4. Step 4: Simplify right side
    908,396.21x = 421,600,980,953.88
  5. Step 5: Solve for x
    x = 421,600,980,953.88/908,396.21
  6. Step 6: Final answer
    x = 464,115.74

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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.