Home / 1,286,820.46-1,928,975.31-612,720.70

Finding the Fourth Proportional to 1,286,820.46, 1,928,975.31 and 612,720.70

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Solution

The fourth proportional to 1,286,820.46, 1,928,975.31 and 612,720.70 is: 918,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,820.46 : 1,928,975.31 = 612,720.70 : x
  2. Step 2: Convert to fraction form
    1,286,820.46/1,928,975.31 = 612,720.70/x
  3. Step 3: Cross multiply
    1,286,820.46x = 1,928,975.31 × 612,720.70
  4. Step 4: Simplify right side
    1,286,820.46x = 1,181,923,102,225.92
  5. Step 5: Solve for x
    x = 1,181,923,102,225.92/1,286,820.46
  6. Step 6: Final answer
    x = 918,483.30

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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.