Home / 813,424.17-1,219,324.23-280,605.36

Finding the Fourth Proportional to 813,424.17, 1,219,324.23 and 280,605.36

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Solution

The fourth proportional to 813,424.17, 1,219,324.23 and 280,605.36 is: 420,627.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,424.17 : 1,219,324.23 = 280,605.36 : x
  2. Step 2: Convert to fraction form
    813,424.17/1,219,324.23 = 280,605.36/x
  3. Step 3: Cross multiply
    813,424.17x = 1,219,324.23 × 280,605.36
  4. Step 4: Simplify right side
    813,424.17x = 342,148,914,515.87
  5. Step 5: Solve for x
    x = 342,148,914,515.87/813,424.17
  6. Step 6: Final answer
    x = 420,627.92

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1.5x scale

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.