Home / 693,631.80-1,040,447.70-409,030.20

Finding the Fourth Proportional to 693,631.80, 1,040,447.70 and 409,030.20

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Solution

The fourth proportional to 693,631.80, 1,040,447.70 and 409,030.20 is: 613,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,631.80 : 1,040,447.70 = 409,030.20 : x
  2. Step 2: Convert to fraction form
    693,631.80/1,040,447.70 = 409,030.20/x
  3. Step 3: Cross multiply
    693,631.80x = 1,040,447.70 × 409,030.20
  4. Step 4: Simplify right side
    693,631.80x = 425,574,530,820.54
  5. Step 5: Solve for x
    x = 425,574,530,820.54/693,631.80
  6. Step 6: Final answer
    x = 613,545.30

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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.