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Finding the Fourth Proportional to 573,694.40, 858,986.40 and 449,278.40

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Solution

The fourth proportional to 573,694.40, 858,986.40 and 449,278.40 is: 672,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,694.40 : 858,986.40 = 449,278.40 : x
  2. Step 2: Convert to fraction form
    573,694.40/858,986.40 = 449,278.40/x
  3. Step 3: Cross multiply
    573,694.40x = 858,986.40 × 449,278.40
  4. Step 4: Simplify right side
    573,694.40x = 385,924,035,413.76
  5. Step 5: Solve for x
    x = 385,924,035,413.76/573,694.40
  6. Step 6: Final answer
    x = 672,699.67

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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.