Home / 1,428,464.81-1,971,311.15-783,847.37

Finding the Fourth Proportional to 1,428,464.81, 1,971,311.15 and 783,847.37

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Solution

The fourth proportional to 1,428,464.81, 1,971,311.15 and 783,847.37 is: 1,081,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,464.81 : 1,971,311.15 = 783,847.37 : x
  2. Step 2: Convert to fraction form
    1,428,464.81/1,971,311.15 = 783,847.37/x
  3. Step 3: Cross multiply
    1,428,464.81x = 1,971,311.15 × 783,847.37
  4. Step 4: Simplify right side
    1,428,464.81x = 1,545,207,052,482.24
  5. Step 5: Solve for x
    x = 1,545,207,052,482.24/1,428,464.81
  6. Step 6: Final answer
    x = 1,081,725.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.