Home / 639,463.58-882,250.16-455,731.09

Finding the Fourth Proportional to 639,463.58, 882,250.16 and 455,731.09

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Solution

The fourth proportional to 639,463.58, 882,250.16 and 455,731.09 is: 628,759.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,463.58 : 882,250.16 = 455,731.09 : x
  2. Step 2: Convert to fraction form
    639,463.58/882,250.16 = 455,731.09/x
  3. Step 3: Cross multiply
    639,463.58x = 882,250.16 × 455,731.09
  4. Step 4: Simplify right side
    639,463.58x = 402,068,827,069.47
  5. Step 5: Solve for x
    x = 402,068,827,069.47/639,463.58
  6. Step 6: Final answer
    x = 628,759.54

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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.