Home / 613,298.82-845,993.64-398,581.92

Finding the Fourth Proportional to 613,298.82, 845,993.64 and 398,581.92

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Solution

The fourth proportional to 613,298.82, 845,993.64 and 398,581.92 is: 549,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,298.82 : 845,993.64 = 398,581.92 : x
  2. Step 2: Convert to fraction form
    613,298.82/845,993.64 = 398,581.92/x
  3. Step 3: Cross multiply
    613,298.82x = 845,993.64 × 398,581.92
  4. Step 4: Simplify right side
    613,298.82x = 337,197,769,338.99
  5. Step 5: Solve for x
    x = 337,197,769,338.99/613,298.82
  6. Step 6: Final answer
    x = 549,809.91

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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.