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Finding the Fourth Proportional to 693,801.86, 957,741.75 and 421,957.02

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Solution

The fourth proportional to 693,801.86, 957,741.75 and 421,957.02 is: 582,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,801.86 : 957,741.75 = 421,957.02 : x
  2. Step 2: Convert to fraction form
    693,801.86/957,741.75 = 421,957.02/x
  3. Step 3: Cross multiply
    693,801.86x = 957,741.75 × 421,957.02
  4. Step 4: Simplify right side
    693,801.86x = 404,125,854,759.59
  5. Step 5: Solve for x
    x = 404,125,854,759.59/693,801.86
  6. Step 6: Final answer
    x = 582,480.21

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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.