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Finding the Fourth Proportional to 451,291.55, 622,423.62 and 383,532.82

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Solution

The fourth proportional to 451,291.55, 622,423.62 and 383,532.82 is: 528,970.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,291.55 : 622,423.62 = 383,532.82 : x
  2. Step 2: Convert to fraction form
    451,291.55/622,423.62 = 383,532.82/x
  3. Step 3: Cross multiply
    451,291.55x = 622,423.62 × 383,532.82
  4. Step 4: Simplify right side
    451,291.55x = 238,719,887,079.60
  5. Step 5: Solve for x
    x = 238,719,887,079.60/451,291.55
  6. Step 6: Final answer
    x = 528,970.43

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1.5x scale

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.