Home / 1,388,619.19-2,082,390.27-477,628.45

Finding the Fourth Proportional to 1,388,619.19, 2,082,390.27 and 477,628.45

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Solution

The fourth proportional to 1,388,619.19, 2,082,390.27 and 477,628.45 is: 716,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,619.19 : 2,082,390.27 = 477,628.45 : x
  2. Step 2: Convert to fraction form
    1,388,619.19/2,082,390.27 = 477,628.45/x
  3. Step 3: Cross multiply
    1,388,619.19x = 2,082,390.27 × 477,628.45
  4. Step 4: Simplify right side
    1,388,619.19x = 994,608,836,955.18
  5. Step 5: Solve for x
    x = 994,608,836,955.18/1,388,619.19
  6. Step 6: Final answer
    x = 716,257.45

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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.