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Finding the Fourth Proportional to 1,369,701, 1,890,193.86 and 766,089

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Solution

The fourth proportional to 1,369,701, 1,890,193.86 and 766,089 is: 1,057,206.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,701 : 1,890,193.86 = 766,089 : x
  2. Step 2: Convert to fraction form
    1,369,701/1,890,193.86 = 766,089/x
  3. Step 3: Cross multiply
    1,369,701x = 1,890,193.86 × 766,089
  4. Step 4: Simplify right side
    1,369,701x = 1,448,056,724,013.54
  5. Step 5: Solve for x
    x = 1,448,056,724,013.54/1,369,701
  6. Step 6: Final answer
    x = 1,057,206.44

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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.