Home / 639,643.02-882,721.14-353,181.24

Finding the Fourth Proportional to 639,643.02, 882,721.14 and 353,181.24

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Solution

The fourth proportional to 639,643.02, 882,721.14 and 353,181.24 is: 487,397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,643.02 : 882,721.14 = 353,181.24 : x
  2. Step 2: Convert to fraction form
    639,643.02/882,721.14 = 353,181.24/x
  3. Step 3: Cross multiply
    639,643.02x = 882,721.14 × 353,181.24
  4. Step 4: Simplify right side
    639,643.02x = 311,760,546,799.41
  5. Step 5: Solve for x
    x = 311,760,546,799.41/639,643.02
  6. Step 6: Final answer
    x = 487,397.72

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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.