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Finding the Fourth Proportional to 609,908.92, 914,870.66 and 290,094.80

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Solution

The fourth proportional to 609,908.92, 914,870.66 and 290,094.80 is: 435,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,908.92 : 914,870.66 = 290,094.80 : x
  2. Step 2: Convert to fraction form
    609,908.92/914,870.66 = 290,094.80/x
  3. Step 3: Cross multiply
    609,908.92x = 914,870.66 × 290,094.80
  4. Step 4: Simplify right side
    609,908.92x = 265,399,221,138.57
  5. Step 5: Solve for x
    x = 265,399,221,138.57/609,908.92
  6. Step 6: Final answer
    x = 435,145.66

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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.