Home / 1,618,842.56-2,428,271.19-420,680.03

Finding the Fourth Proportional to 1,618,842.56, 2,428,271.19 and 420,680.03

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Solution

The fourth proportional to 1,618,842.56, 2,428,271.19 and 420,680.03 is: 631,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,842.56 : 2,428,271.19 = 420,680.03 : x
  2. Step 2: Convert to fraction form
    1,618,842.56/2,428,271.19 = 420,680.03/x
  3. Step 3: Cross multiply
    1,618,842.56x = 2,428,271.19 × 420,680.03
  4. Step 4: Simplify right side
    1,618,842.56x = 1,021,525,197,057.34
  5. Step 5: Solve for x
    x = 1,021,525,197,057.34/1,618,842.56
  6. Step 6: Final answer
    x = 631,021.96

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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.