Home / 921,205.36-1,381,857.48-290,168.56

Finding the Fourth Proportional to 921,205.36, 1,381,857.48 and 290,168.56

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Solution

The fourth proportional to 921,205.36, 1,381,857.48 and 290,168.56 is: 435,268.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,205.36 : 1,381,857.48 = 290,168.56 : x
  2. Step 2: Convert to fraction form
    921,205.36/1,381,857.48 = 290,168.56/x
  3. Step 3: Cross multiply
    921,205.36x = 1,381,857.48 × 290,168.56
  4. Step 4: Simplify right side
    921,205.36x = 400,971,595,096.83
  5. Step 5: Solve for x
    x = 400,971,595,096.83/921,205.36
  6. Step 6: Final answer
    x = 435,268.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.