Home / 420,722.08-580,671.30-248,632.72

Finding the Fourth Proportional to 420,722.08, 580,671.30 and 248,632.72

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Solution

The fourth proportional to 420,722.08, 580,671.30 and 248,632.72 is: 343,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,722.08 : 580,671.30 = 248,632.72 : x
  2. Step 2: Convert to fraction form
    420,722.08/580,671.30 = 248,632.72/x
  3. Step 3: Cross multiply
    420,722.08x = 580,671.30 × 248,632.72
  4. Step 4: Simplify right side
    420,722.08x = 144,373,884,744.94
  5. Step 5: Solve for x
    x = 144,373,884,744.94/420,722.08
  6. Step 6: Final answer
    x = 343,157.38

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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.