Home / 823,900.78-1,235,855.28-291,422.29

Finding the Fourth Proportional to 823,900.78, 1,235,855.28 and 291,422.29

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Solution

The fourth proportional to 823,900.78, 1,235,855.28 and 291,422.29 is: 437,134.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,900.78 : 1,235,855.28 = 291,422.29 : x
  2. Step 2: Convert to fraction form
    823,900.78/1,235,855.28 = 291,422.29/x
  3. Step 3: Cross multiply
    823,900.78x = 1,235,855.28 × 291,422.29
  4. Step 4: Simplify right side
    823,900.78x = 360,155,775,806.19
  5. Step 5: Solve for x
    x = 360,155,775,806.19/823,900.78
  6. Step 6: Final answer
    x = 437,134.89

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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.