Home / 879,644.58-1,213,780.46-492,439.88

Finding the Fourth Proportional to 879,644.58, 1,213,780.46 and 492,439.88

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Solution

The fourth proportional to 879,644.58, 1,213,780.46 and 492,439.88 is: 679,494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,644.58 : 1,213,780.46 = 492,439.88 : x
  2. Step 2: Convert to fraction form
    879,644.58/1,213,780.46 = 492,439.88/x
  3. Step 3: Cross multiply
    879,644.58x = 1,213,780.46 × 492,439.88
  4. Step 4: Simplify right side
    879,644.58x = 597,713,904,068.75
  5. Step 5: Solve for x
    x = 597,713,904,068.75/879,644.58
  6. Step 6: Final answer
    x = 679,494.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.