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Finding the Fourth Proportional to 623,978, 936,064.44 and 203,154.80

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Solution

The fourth proportional to 623,978, 936,064.44 and 203,154.80 is: 304,763.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,978 : 936,064.44 = 203,154.80 : x
  2. Step 2: Convert to fraction form
    623,978/936,064.44 = 203,154.80/x
  3. Step 3: Cross multiply
    623,978x = 936,064.44 × 203,154.80
  4. Step 4: Simplify right side
    623,978x = 190,165,984,095.31
  5. Step 5: Solve for x
    x = 190,165,984,095.31/623,978
  6. Step 6: Final answer
    x = 304,763.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.