Home / 639,464.08-882,250.85-455,731.59

Finding the Fourth Proportional to 639,464.08, 882,250.85 and 455,731.59

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Solution

The fourth proportional to 639,464.08, 882,250.85 and 455,731.59 is: 628,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,464.08 : 882,250.85 = 455,731.59 : x
  2. Step 2: Convert to fraction form
    639,464.08/882,250.85 = 455,731.59/x
  3. Step 3: Cross multiply
    639,464.08x = 882,250.85 × 455,731.59
  4. Step 4: Simplify right side
    639,464.08x = 402,069,582,649.35
  5. Step 5: Solve for x
    x = 402,069,582,649.35/639,464.08
  6. Step 6: Final answer
    x = 628,760.23

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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.