Home / 1,329,411.26-1,993,690.40-430,636.30

Finding the Fourth Proportional to 1,329,411.26, 1,993,690.40 and 430,636.30

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Solution

The fourth proportional to 1,329,411.26, 1,993,690.40 and 430,636.30 is: 645,816.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,411.26 : 1,993,690.40 = 430,636.30 : x
  2. Step 2: Convert to fraction form
    1,329,411.26/1,993,690.40 = 430,636.30/x
  3. Step 3: Cross multiply
    1,329,411.26x = 1,993,690.40 × 430,636.30
  4. Step 4: Simplify right side
    1,329,411.26x = 858,555,457,201.52
  5. Step 5: Solve for x
    x = 858,555,457,201.52/1,329,411.26
  6. Step 6: Final answer
    x = 645,816.30

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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.