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Finding the Fourth Proportional to 1,219,719, 1,683,212.22 and 742,791

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Solution

The fourth proportional to 1,219,719, 1,683,212.22 and 742,791 is: 1,025,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,719 : 1,683,212.22 = 742,791 : x
  2. Step 2: Convert to fraction form
    1,219,719/1,683,212.22 = 742,791/x
  3. Step 3: Cross multiply
    1,219,719x = 1,683,212.22 × 742,791
  4. Step 4: Simplify right side
    1,219,719x = 1,250,274,888,106.02
  5. Step 5: Solve for x
    x = 1,250,274,888,106.02/1,219,719
  6. Step 6: Final answer
    x = 1,025,051.58

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Why These Related Problems?

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