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Finding the Fourth Proportional to 525,451,572.80, 788,177,359.20 and 331,959,809.60

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Solution

The fourth proportional to 525,451,572.80, 788,177,359.20 and 331,959,809.60 is: 497,939,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,451,572.80 : 788,177,359.20 = 331,959,809.60 : x
  2. Step 2: Convert to fraction form
    525,451,572.80/788,177,359.20 = 331,959,809.60/x
  3. Step 3: Cross multiply
    525,451,572.80x = 788,177,359.20 × 331,959,809.60
  4. Step 4: Simplify right side
    525,451,572.80x = 261,643,206,091,062,848
  5. Step 5: Solve for x
    x = 261,643,206,091,062,848/525,451,572.80
  6. Step 6: Final answer
    x = 497,939,714.40

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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.