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Finding the Fourth Proportional to 622,918.60, 933,794.70 and 487,907.80

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Solution

The fourth proportional to 622,918.60, 933,794.70 and 487,907.80 is: 731,404.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,918.60 : 933,794.70 = 487,907.80 : x
  2. Step 2: Convert to fraction form
    622,918.60/933,794.70 = 487,907.80/x
  3. Step 3: Cross multiply
    622,918.60x = 933,794.70 × 487,907.80
  4. Step 4: Simplify right side
    622,918.60x = 455,605,717,728.66
  5. Step 5: Solve for x
    x = 455,605,717,728.66/622,918.60
  6. Step 6: Final answer
    x = 731,404.90

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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.