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Finding the Fourth Proportional to 513,673.45, 770,641.63 and 300,620.77

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Solution

The fourth proportional to 513,673.45, 770,641.63 and 300,620.77 is: 451,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,673.45 : 770,641.63 = 300,620.77 : x
  2. Step 2: Convert to fraction form
    513,673.45/770,641.63 = 300,620.77/x
  3. Step 3: Cross multiply
    513,673.45x = 770,641.63 × 300,620.77
  4. Step 4: Simplify right side
    513,673.45x = 231,670,877,526.50
  5. Step 5: Solve for x
    x = 231,670,877,526.50/513,673.45
  6. Step 6: Final answer
    x = 451,008.08

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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.