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Finding the Fourth Proportional to 489,312.70, 733,969.05 and 489,312.70

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Solution

The fourth proportional to 489,312.70, 733,969.05 and 489,312.70 is: 733,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,312.70 : 733,969.05 = 489,312.70 : x
  2. Step 2: Convert to fraction form
    489,312.70/733,969.05 = 489,312.70/x
  3. Step 3: Cross multiply
    489,312.70x = 733,969.05 × 489,312.70
  4. Step 4: Simplify right side
    489,312.70x = 359,140,377,571.94
  5. Step 5: Solve for x
    x = 359,140,377,571.94/489,312.70
  6. Step 6: Final answer
    x = 733,969.05

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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.