Home / 400,720.74-552,525.39-319,889.22

Finding the Fourth Proportional to 400,720.74, 552,525.39 and 319,889.22

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Solution

The fourth proportional to 400,720.74, 552,525.39 and 319,889.22 is: 441,072.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,720.74 : 552,525.39 = 319,889.22 : x
  2. Step 2: Convert to fraction form
    400,720.74/552,525.39 = 319,889.22/x
  3. Step 3: Cross multiply
    400,720.74x = 552,525.39 × 319,889.22
  4. Step 4: Simplify right side
    400,720.74x = 176,746,916,037.30
  5. Step 5: Solve for x
    x = 176,746,916,037.30/400,720.74
  6. Step 6: Final answer
    x = 441,072.54

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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.