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Finding the Fourth Proportional to 528,353,454.80, 791,858,335.80 and 255,135,918.80

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Solution

The fourth proportional to 528,353,454.80, 791,858,335.80 and 255,135,918.80 is: 382,379,451.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,353,454.80 : 791,858,335.80 = 255,135,918.80 : x
  2. Step 2: Convert to fraction form
    528,353,454.80/791,858,335.80 = 255,135,918.80/x
  3. Step 3: Cross multiply
    528,353,454.80x = 791,858,335.80 × 255,135,918.80
  4. Step 4: Simplify right side
    528,353,454.80x = 202,031,504,063,771,936
  5. Step 5: Solve for x
    x = 202,031,504,063,771,936/528,353,454.80
  6. Step 6: Final answer
    x = 382,379,451.16

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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.