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Finding the Fourth Proportional to 890,346.56, 1,335,522 and 259,275.68

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Solution

The fourth proportional to 890,346.56, 1,335,522 and 259,275.68 is: 388,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,346.56 : 1,335,522 = 259,275.68 : x
  2. Step 2: Convert to fraction form
    890,346.56/1,335,522 = 259,275.68/x
  3. Step 3: Cross multiply
    890,346.56x = 1,335,522 × 259,275.68
  4. Step 4: Simplify right side
    890,346.56x = 346,268,374,704.96
  5. Step 5: Solve for x
    x = 346,268,374,704.96/890,346.56
  6. Step 6: Final answer
    x = 388,914.15

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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.