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Finding the Fourth Proportional to 1,788,009.90, 2,682,014.85 and 1,114,851.30

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Solution

The fourth proportional to 1,788,009.90, 2,682,014.85 and 1,114,851.30 is: 1,672,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788,009.90 : 2,682,014.85 = 1,114,851.30 : x
  2. Step 2: Convert to fraction form
    1,788,009.90/2,682,014.85 = 1,114,851.30/x
  3. Step 3: Cross multiply
    1,788,009.90x = 2,682,014.85 × 1,114,851.30
  4. Step 4: Simplify right side
    1,788,009.90x = 2,990,047,742,141.81
  5. Step 5: Solve for x
    x = 2,990,047,742,141.81/1,788,009.90
  6. Step 6: Final answer
    x = 1,672,276.95

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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.