Home / 1,208,539.31-1,812,809.41-309,981.07

Finding the Fourth Proportional to 1,208,539.31, 1,812,809.41 and 309,981.07

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Solution

The fourth proportional to 1,208,539.31, 1,812,809.41 and 309,981.07 is: 464,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,539.31 : 1,812,809.41 = 309,981.07 : x
  2. Step 2: Convert to fraction form
    1,208,539.31/1,812,809.41 = 309,981.07/x
  3. Step 3: Cross multiply
    1,208,539.31x = 1,812,809.41 × 309,981.07
  4. Step 4: Simplify right side
    1,208,539.31x = 561,936,595,310.89
  5. Step 5: Solve for x
    x = 561,936,595,310.89/1,208,539.31
  6. Step 6: Final answer
    x = 464,971.71

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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.