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Finding the Fourth Proportional to 1,219,716, 1,683,208.08 and 742,788

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Solution

The fourth proportional to 1,219,716, 1,683,208.08 and 742,788 is: 1,025,047.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,716 : 1,683,208.08 = 742,788 : x
  2. Step 2: Convert to fraction form
    1,219,716/1,683,208.08 = 742,788/x
  3. Step 3: Cross multiply
    1,219,716x = 1,683,208.08 × 742,788
  4. Step 4: Simplify right side
    1,219,716x = 1,250,266,763,327.04
  5. Step 5: Solve for x
    x = 1,250,266,763,327.04/1,219,716
  6. Step 6: Final answer
    x = 1,025,047.44

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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.