Home / 1,054,428.46-1,581,315.54-380,422.12

Finding the Fourth Proportional to 1,054,428.46, 1,581,315.54 and 380,422.12

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Solution

The fourth proportional to 1,054,428.46, 1,581,315.54 and 380,422.12 is: 570,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054,428.46 : 1,581,315.54 = 380,422.12 : x
  2. Step 2: Convert to fraction form
    1,054,428.46/1,581,315.54 = 380,422.12/x
  3. Step 3: Cross multiply
    1,054,428.46x = 1,581,315.54 × 380,422.12
  4. Step 4: Simplify right side
    1,054,428.46x = 601,567,410,115.75
  5. Step 5: Solve for x
    x = 601,567,410,115.75/1,054,428.46
  6. Step 6: Final answer
    x = 570,515.15

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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.