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Finding the Fourth Proportional to 890,170.48, 1,335,310 and 291,194.88

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Solution

The fourth proportional to 890,170.48, 1,335,310 and 291,194.88 is: 436,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,170.48 : 1,335,310 = 291,194.88 : x
  2. Step 2: Convert to fraction form
    890,170.48/1,335,310 = 291,194.88/x
  3. Step 3: Cross multiply
    890,170.48x = 1,335,310 × 291,194.88
  4. Step 4: Simplify right side
    890,170.48x = 388,835,435,212.80
  5. Step 5: Solve for x
    x = 388,835,435,212.80/890,170.48
  6. Step 6: Final answer
    x = 436,810.08

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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.