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Finding the Fourth Proportional to 659,264.40, 987,341.40 and 447,757.20

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Solution

The fourth proportional to 659,264.40, 987,341.40 and 447,757.20 is: 670,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,264.40 : 987,341.40 = 447,757.20 : x
  2. Step 2: Convert to fraction form
    659,264.40/987,341.40 = 447,757.20/x
  3. Step 3: Cross multiply
    659,264.40x = 987,341.40 × 447,757.20
  4. Step 4: Simplify right side
    659,264.40x = 442,089,220,708.08
  5. Step 5: Solve for x
    x = 442,089,220,708.08/659,264.40
  6. Step 6: Final answer
    x = 670,579.54

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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.