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Finding the Fourth Proportional to 979,776, 1,469,756.88 and 380,783.34

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Solution

The fourth proportional to 979,776, 1,469,756.88 and 380,783.34 is: 571,211.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,776 : 1,469,756.88 = 380,783.34 : x
  2. Step 2: Convert to fraction form
    979,776/1,469,756.88 = 380,783.34/x
  3. Step 3: Cross multiply
    979,776x = 1,469,756.88 × 380,783.34
  4. Step 4: Simplify right side
    979,776x = 559,658,933,754.38
  5. Step 5: Solve for x
    x = 559,658,933,754.38/979,776
  6. Step 6: Final answer
    x = 571,211.11

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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.