Home / 688,680.23-950,105.43-398,238.12

Finding the Fourth Proportional to 688,680.23, 950,105.43 and 398,238.12

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Solution

The fourth proportional to 688,680.23, 950,105.43 and 398,238.12 is: 549,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,680.23 : 950,105.43 = 398,238.12 : x
  2. Step 2: Convert to fraction form
    688,680.23/950,105.43 = 398,238.12/x
  3. Step 3: Cross multiply
    688,680.23x = 950,105.43 × 398,238.12
  4. Step 4: Simplify right side
    688,680.23x = 378,368,200,244.99
  5. Step 5: Solve for x
    x = 378,368,200,244.99/688,680.23
  6. Step 6: Final answer
    x = 549,410.58

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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.