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Finding the Fourth Proportional to 700,515.09, 966,532.46 and 428,483.61

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Solution

The fourth proportional to 700,515.09, 966,532.46 and 428,483.61 is: 591,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,515.09 : 966,532.46 = 428,483.61 : x
  2. Step 2: Convert to fraction form
    700,515.09/966,532.46 = 428,483.61/x
  3. Step 3: Cross multiply
    700,515.09x = 966,532.46 × 428,483.61
  4. Step 4: Simplify right side
    700,515.09x = 414,143,315,500.56
  5. Step 5: Solve for x
    x = 414,143,315,500.56/700,515.09
  6. Step 6: Final answer
    x = 591,198.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.