Home / 1,328,601.28-1,993,218.30-430,043.20

Finding the Fourth Proportional to 1,328,601.28, 1,993,218.30 and 430,043.20

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Solution

The fourth proportional to 1,328,601.28, 1,993,218.30 and 430,043.20 is: 645,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,601.28 : 1,993,218.30 = 430,043.20 : x
  2. Step 2: Convert to fraction form
    1,328,601.28/1,993,218.30 = 430,043.20/x
  3. Step 3: Cross multiply
    1,328,601.28x = 1,993,218.30 × 430,043.20
  4. Step 4: Simplify right side
    1,328,601.28x = 857,169,976,030.56
  5. Step 5: Solve for x
    x = 857,169,976,030.56/1,328,601.28
  6. Step 6: Final answer
    x = 645,167.21

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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.