Home / 639,116.83-882,300.80-397,477.26

Finding the Fourth Proportional to 639,116.83, 882,300.80 and 397,477.26

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Solution

The fourth proportional to 639,116.83, 882,300.80 and 397,477.26 is: 548,717.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,116.83 : 882,300.80 = 397,477.26 : x
  2. Step 2: Convert to fraction form
    639,116.83/882,300.80 = 397,477.26/x
  3. Step 3: Cross multiply
    639,116.83x = 882,300.80 × 397,477.26
  4. Step 4: Simplify right side
    639,116.83x = 350,694,505,473.50
  5. Step 5: Solve for x
    x = 350,694,505,473.50/639,116.83
  6. Step 6: Final answer
    x = 548,717.37

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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.