Home / 1,389,932.70-2,084,899.05-443,399.10

Finding the Fourth Proportional to 1,389,932.70, 2,084,899.05 and 443,399.10

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Solution

The fourth proportional to 1,389,932.70, 2,084,899.05 and 443,399.10 is: 665,098.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,932.70 : 2,084,899.05 = 443,399.10 : x
  2. Step 2: Convert to fraction form
    1,389,932.70/2,084,899.05 = 443,399.10/x
  3. Step 3: Cross multiply
    1,389,932.70x = 2,084,899.05 × 443,399.10
  4. Step 4: Simplify right side
    1,389,932.70x = 924,442,362,360.86
  5. Step 5: Solve for x
    x = 924,442,362,360.86/1,389,932.70
  6. Step 6: Final answer
    x = 665,098.65

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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.