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Finding the Fourth Proportional to 1,256,787.33, 1,882,802.39 and 742,914.02

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Solution

The fourth proportional to 1,256,787.33, 1,882,802.39 and 742,914.02 is: 1,112,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,787.33 : 1,882,802.39 = 742,914.02 : x
  2. Step 2: Convert to fraction form
    1,256,787.33/1,882,802.39 = 742,914.02/x
  3. Step 3: Cross multiply
    1,256,787.33x = 1,882,802.39 × 742,914.02
  4. Step 4: Simplify right side
    1,256,787.33x = 1,398,760,283,006.50
  5. Step 5: Solve for x
    x = 1,398,760,283,006.50/1,256,787.33
  6. Step 6: Final answer
    x = 1,112,964.98

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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.