Home / 479,303.72-661,516.68-285,735.18

Finding the Fourth Proportional to 479,303.72, 661,516.68 and 285,735.18

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Solution

The fourth proportional to 479,303.72, 661,516.68 and 285,735.18 is: 394,360.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,303.72 : 661,516.68 = 285,735.18 : x
  2. Step 2: Convert to fraction form
    479,303.72/661,516.68 = 285,735.18/x
  3. Step 3: Cross multiply
    479,303.72x = 661,516.68 × 285,735.18
  4. Step 4: Simplify right side
    479,303.72x = 189,018,587,632.80
  5. Step 5: Solve for x
    x = 189,018,587,632.80/479,303.72
  6. Step 6: Final answer
    x = 394,360.78

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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.