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Finding the Fourth Proportional to 1,289,899.98, 1,934,843.88 and 330,353.76

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Solution

The fourth proportional to 1,289,899.98, 1,934,843.88 and 330,353.76 is: 495,529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,899.98 : 1,934,843.88 = 330,353.76 : x
  2. Step 2: Convert to fraction form
    1,289,899.98/1,934,843.88 = 330,353.76/x
  3. Step 3: Cross multiply
    1,289,899.98x = 1,934,843.88 × 330,353.76
  4. Step 4: Simplify right side
    1,289,899.98x = 639,182,950,770.99
  5. Step 5: Solve for x
    x = 639,182,950,770.99/1,289,899.98
  6. Step 6: Final answer
    x = 495,529.08

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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.