Home / 926,640.32-1,278,753.84-518,745.51

Finding the Fourth Proportional to 926,640.32, 1,278,753.84 and 518,745.51

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Solution

The fourth proportional to 926,640.32, 1,278,753.84 and 518,745.51 is: 715,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,640.32 : 1,278,753.84 = 518,745.51 : x
  2. Step 2: Convert to fraction form
    926,640.32/1,278,753.84 = 518,745.51/x
  3. Step 3: Cross multiply
    926,640.32x = 1,278,753.84 × 518,745.51
  4. Step 4: Simplify right side
    926,640.32x = 663,347,812,895.26
  5. Step 5: Solve for x
    x = 663,347,812,895.26/926,640.32
  6. Step 6: Final answer
    x = 715,863.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.