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Finding the Fourth Proportional to 662,740.20, 994,401.90 and 307,571.40

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Solution

The fourth proportional to 662,740.20, 994,401.90 and 307,571.40 is: 461,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,740.20 : 994,401.90 = 307,571.40 : x
  2. Step 2: Convert to fraction form
    662,740.20/994,401.90 = 307,571.40/x
  3. Step 3: Cross multiply
    662,740.20x = 994,401.90 × 307,571.40
  4. Step 4: Simplify right side
    662,740.20x = 305,849,584,545.66
  5. Step 5: Solve for x
    x = 305,849,584,545.66/662,740.20
  6. Step 6: Final answer
    x = 461,492.43

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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.