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Finding the Fourth Proportional to 1,289,604.80, 1,933,485.60 and 579,051.20

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Solution

The fourth proportional to 1,289,604.80, 1,933,485.60 and 579,051.20 is: 868,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,604.80 : 1,933,485.60 = 579,051.20 : x
  2. Step 2: Convert to fraction form
    1,289,604.80/1,933,485.60 = 579,051.20/x
  3. Step 3: Cross multiply
    1,289,604.80x = 1,933,485.60 × 579,051.20
  4. Step 4: Simplify right side
    1,289,604.80x = 1,119,587,156,862.72
  5. Step 5: Solve for x
    x = 1,119,587,156,862.72/1,289,604.80
  6. Step 6: Final answer
    x = 868,162.99

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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.