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Finding the Fourth Proportional to 871,809.80, 1,307,714.70 and 659,233.40

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Solution

The fourth proportional to 871,809.80, 1,307,714.70 and 659,233.40 is: 988,850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,809.80 : 1,307,714.70 = 659,233.40 : x
  2. Step 2: Convert to fraction form
    871,809.80/1,307,714.70 = 659,233.40/x
  3. Step 3: Cross multiply
    871,809.80x = 1,307,714.70 × 659,233.40
  4. Step 4: Simplify right side
    871,809.80x = 862,089,207,910.98
  5. Step 5: Solve for x
    x = 862,089,207,910.98/871,809.80
  6. Step 6: Final answer
    x = 988,850.10

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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.