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Finding the Fourth Proportional to 807,792.40, 1,211,591.40 and 334,428.40

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Solution

The fourth proportional to 807,792.40, 1,211,591.40 and 334,428.40 is: 501,602.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,792.40 : 1,211,591.40 = 334,428.40 : x
  2. Step 2: Convert to fraction form
    807,792.40/1,211,591.40 = 334,428.40/x
  3. Step 3: Cross multiply
    807,792.40x = 1,211,591.40 × 334,428.40
  4. Step 4: Simplify right side
    807,792.40x = 405,190,573,355.76
  5. Step 5: Solve for x
    x = 405,190,573,355.76/807,792.40
  6. Step 6: Final answer
    x = 501,602.36

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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.