Home / 920,955.51-1,381,620.11-289,722.51

Finding the Fourth Proportional to 920,955.51, 1,381,620.11 and 289,722.51

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Solution

The fourth proportional to 920,955.51, 1,381,620.11 and 289,722.51 is: 434,642.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,955.51 : 1,381,620.11 = 289,722.51 : x
  2. Step 2: Convert to fraction form
    920,955.51/1,381,620.11 = 289,722.51/x
  3. Step 3: Cross multiply
    920,955.51x = 1,381,620.11 × 289,722.51
  4. Step 4: Simplify right side
    920,955.51x = 400,286,444,687.06
  5. Step 5: Solve for x
    x = 400,286,444,687.06/920,955.51
  6. Step 6: Final answer
    x = 434,642.54

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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.