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Finding the Fourth Proportional to 664,492.80, 997,084.80 and 290,553.60

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Solution

The fourth proportional to 664,492.80, 997,084.80 and 290,553.60 is: 435,981.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,492.80 : 997,084.80 = 290,553.60 : x
  2. Step 2: Convert to fraction form
    664,492.80/997,084.80 = 290,553.60/x
  3. Step 3: Cross multiply
    664,492.80x = 997,084.80 × 290,553.60
  4. Step 4: Simplify right side
    664,492.80x = 289,706,578,145.28
  5. Step 5: Solve for x
    x = 289,706,578,145.28/664,492.80
  6. Step 6: Final answer
    x = 435,981.52

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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.