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Finding the Fourth Proportional to 1,293,435.54, 1,784,959.54 and 742,241.07

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Solution

The fourth proportional to 1,293,435.54, 1,784,959.54 and 742,241.07 is: 1,024,303.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,435.54 : 1,784,959.54 = 742,241.07 : x
  2. Step 2: Convert to fraction form
    1,293,435.54/1,784,959.54 = 742,241.07/x
  3. Step 3: Cross multiply
    1,293,435.54x = 1,784,959.54 × 742,241.07
  4. Step 4: Simplify right side
    1,293,435.54x = 1,324,870,277,020.71
  5. Step 5: Solve for x
    x = 1,324,870,277,020.71/1,293,435.54
  6. Step 6: Final answer
    x = 1,024,303.29

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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.