Home / 686,420,217,717.44-947,245,045,786.08-397,400,663,618.24

Finding the Fourth Proportional to 686,420,217,717.44, 947,245,045,786.08 and 397,400,663,618.24

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Solution

The fourth proportional to 686,420,217,717.44, 947,245,045,786.08 and 397,400,663,618.24 is: 548,404,315,735.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,420,217,717.44 : 947,245,045,786.08 = 397,400,663,618.24 : x
  2. Step 2: Convert to fraction form
    686,420,217,717.44/947,245,045,786.08 = 397,400,663,618.24/x
  3. Step 3: Cross multiply
    686,420,217,717.44x = 947,245,045,786.08 × 397,400,663,618.24
  4. Step 4: Simplify right side
    686,420,217,717.44x = 376,435,809,804,478,291,378,176
  5. Step 5: Solve for x
    x = 376,435,809,804,478,291,378,176/686,420,217,717.44
  6. Step 6: Final answer
    x = 548,404,315,735.69

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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.