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Finding the Fourth Proportional to 1,289,748.61, 1,935,400.52 and 448,890.85

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Solution

The fourth proportional to 1,289,748.61, 1,935,400.52 and 448,890.85 is: 673,606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,748.61 : 1,935,400.52 = 448,890.85 : x
  2. Step 2: Convert to fraction form
    1,289,748.61/1,935,400.52 = 448,890.85/x
  3. Step 3: Cross multiply
    1,289,748.61x = 1,935,400.52 × 448,890.85
  4. Step 4: Simplify right side
    1,289,748.61x = 868,783,582,268.79
  5. Step 5: Solve for x
    x = 868,783,582,268.79/1,289,748.61
  6. Step 6: Final answer
    x = 673,606.91

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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.