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Finding the Fourth Proportional to 888,809.80, 1,333,409.10 and 439,745.80

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Solution

The fourth proportional to 888,809.80, 1,333,409.10 and 439,745.80 is: 659,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,809.80 : 1,333,409.10 = 439,745.80 : x
  2. Step 2: Convert to fraction form
    888,809.80/1,333,409.10 = 439,745.80/x
  3. Step 3: Cross multiply
    888,809.80x = 1,333,409.10 × 439,745.80
  4. Step 4: Simplify right side
    888,809.80x = 586,361,051,406.78
  5. Step 5: Solve for x
    x = 586,361,051,406.78/888,809.80
  6. Step 6: Final answer
    x = 659,714.88

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1.5x scale

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.