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Finding the Fourth Proportional to 777,897, 1,166,845.50 and 186,921

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Solution

The fourth proportional to 777,897, 1,166,845.50 and 186,921 is: 280,381.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,897 : 1,166,845.50 = 186,921 : x
  2. Step 2: Convert to fraction form
    777,897/1,166,845.50 = 186,921/x
  3. Step 3: Cross multiply
    777,897x = 1,166,845.50 × 186,921
  4. Step 4: Simplify right side
    777,897x = 218,107,927,705.50
  5. Step 5: Solve for x
    x = 218,107,927,705.50/777,897
  6. Step 6: Final answer
    x = 280,381.50

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1.5x scale

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.