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Finding the Fourth Proportional to 2,789,569, 4,184,353.50 and 688,321

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Solution

The fourth proportional to 2,789,569, 4,184,353.50 and 688,321 is: 1,032,481.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789,569 : 4,184,353.50 = 688,321 : x
  2. Step 2: Convert to fraction form
    2,789,569/4,184,353.50 = 688,321/x
  3. Step 3: Cross multiply
    2,789,569x = 4,184,353.50 × 688,321
  4. Step 4: Simplify right side
    2,789,569x = 2,880,178,385,473.50
  5. Step 5: Solve for x
    x = 2,880,178,385,473.50/2,789,569
  6. Step 6: Final answer
    x = 1,032,481.50

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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.