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Finding the Fourth Proportional to 686,768.66, 947,722.78 and 380,844.26

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Solution

The fourth proportional to 686,768.66, 947,722.78 and 380,844.26 is: 525,555.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,768.66 : 947,722.78 = 380,844.26 : x
  2. Step 2: Convert to fraction form
    686,768.66/947,722.78 = 380,844.26/x
  3. Step 3: Cross multiply
    686,768.66x = 947,722.78 × 380,844.26
  4. Step 4: Simplify right side
    686,768.66x = 360,934,780,125.65
  5. Step 5: Solve for x
    x = 360,934,780,125.65/686,768.66
  6. Step 6: Final answer
    x = 525,555.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.