Home / 639,186.66-882,396.86-397,547.19

Finding the Fourth Proportional to 639,186.66, 882,396.86 and 397,547.19

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Solution

The fourth proportional to 639,186.66, 882,396.86 and 397,547.19 is: 548,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,186.66 : 882,396.86 = 397,547.19 : x
  2. Step 2: Convert to fraction form
    639,186.66/882,396.86 = 397,547.19/x
  3. Step 3: Cross multiply
    639,186.66x = 882,396.86 × 397,547.19
  4. Step 4: Simplify right side
    639,186.66x = 350,794,390,170.09
  5. Step 5: Solve for x
    x = 350,794,390,170.09/639,186.66
  6. Step 6: Final answer
    x = 548,813.69

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Double scale
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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.