Home / 420,738.77-580,619.00-248,718.74

Finding the Fourth Proportional to 420,738.77, 580,619.00 and 248,718.74

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Solution

The fourth proportional to 420,738.77, 580,619.00 and 248,718.74 is: 343,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,738.77 : 580,619.00 = 248,718.74 : x
  2. Step 2: Convert to fraction form
    420,738.77/580,619.00 = 248,718.74/x
  3. Step 3: Cross multiply
    420,738.77x = 580,619.00 × 248,718.74
  4. Step 4: Simplify right side
    420,738.77x = 144,410,823,818.76
  5. Step 5: Solve for x
    x = 144,410,823,818.76/420,738.77
  6. Step 6: Final answer
    x = 343,231.56

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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.