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Finding the Fourth Proportional to 1,769,991.90, 2,442,443.67 and 1,005,870.30

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Solution

The fourth proportional to 1,769,991.90, 2,442,443.67 and 1,005,870.30 is: 1,388,018.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769,991.90 : 2,442,443.67 = 1,005,870.30 : x
  2. Step 2: Convert to fraction form
    1,769,991.90/2,442,443.67 = 1,005,870.30/x
  3. Step 3: Cross multiply
    1,769,991.90x = 2,442,443.67 × 1,005,870.30
  4. Step 4: Simplify right side
    1,769,991.90x = 2,456,781,547,076.00
  5. Step 5: Solve for x
    x = 2,456,781,547,076.00/1,769,991.90
  6. Step 6: Final answer
    x = 1,388,018.53

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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.