Home / 621,120.16-857,176.20-349,273.64

Finding the Fourth Proportional to 621,120.16, 857,176.20 and 349,273.64

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Solution

The fourth proportional to 621,120.16, 857,176.20 and 349,273.64 is: 482,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,120.16 : 857,176.20 = 349,273.64 : x
  2. Step 2: Convert to fraction form
    621,120.16/857,176.20 = 349,273.64/x
  3. Step 3: Cross multiply
    621,120.16x = 857,176.20 × 349,273.64
  4. Step 4: Simplify right side
    621,120.16x = 299,389,051,495.37
  5. Step 5: Solve for x
    x = 299,389,051,495.37/621,120.16
  6. Step 6: Final answer
    x = 482,014.71

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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.