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Finding the Fourth Proportional to 1,289,894.23, 1,934,835.27 and 330,347.98

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Solution

The fourth proportional to 1,289,894.23, 1,934,835.27 and 330,347.98 is: 495,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,894.23 : 1,934,835.27 = 330,347.98 : x
  2. Step 2: Convert to fraction form
    1,289,894.23/1,934,835.27 = 330,347.98/x
  3. Step 3: Cross multiply
    1,289,894.23x = 1,934,835.27 × 330,347.98
  4. Step 4: Simplify right side
    1,289,894.23x = 639,168,923,077.26
  5. Step 5: Solve for x
    x = 639,168,923,077.26/1,289,894.23
  6. Step 6: Final answer
    x = 495,520.41

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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.