Home / 1,328,709.40-1,993,064.10-618,809.20

Finding the Fourth Proportional to 1,328,709.40, 1,993,064.10 and 618,809.20

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Solution

The fourth proportional to 1,328,709.40, 1,993,064.10 and 618,809.20 is: 928,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,709.40 : 1,993,064.10 = 618,809.20 : x
  2. Step 2: Convert to fraction form
    1,328,709.40/1,993,064.10 = 618,809.20/x
  3. Step 3: Cross multiply
    1,328,709.40x = 1,993,064.10 × 618,809.20
  4. Step 4: Simplify right side
    1,328,709.40x = 1,233,326,401,269.72
  5. Step 5: Solve for x
    x = 1,233,326,401,269.72/1,328,709.40
  6. Step 6: Final answer
    x = 928,213.80

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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.