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Finding the Fourth Proportional to 485,157.07, 669,062.64 and 383,425.57

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Solution

The fourth proportional to 485,157.07, 669,062.64 and 383,425.57 is: 528,768.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,157.07 : 669,062.64 = 383,425.57 : x
  2. Step 2: Convert to fraction form
    485,157.07/669,062.64 = 383,425.57/x
  3. Step 3: Cross multiply
    485,157.07x = 669,062.64 × 383,425.57
  4. Step 4: Simplify right side
    485,157.07x = 256,535,722,435.05
  5. Step 5: Solve for x
    x = 256,535,722,435.05/485,157.07
  6. Step 6: Final answer
    x = 528,768.39

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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.