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Finding the Fourth Proportional to 502,486.54, 693,150.75 and 308,759.69

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Solution

The fourth proportional to 502,486.54, 693,150.75 and 308,759.69 is: 425,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,486.54 : 693,150.75 = 308,759.69 : x
  2. Step 2: Convert to fraction form
    502,486.54/693,150.75 = 308,759.69/x
  3. Step 3: Cross multiply
    502,486.54x = 693,150.75 × 308,759.69
  4. Step 4: Simplify right side
    502,486.54x = 214,017,010,693.27
  5. Step 5: Solve for x
    x = 214,017,010,693.27/502,486.54
  6. Step 6: Final answer
    x = 425,915.91

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Double scale
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Similar ratio
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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.