Home / 921,643.08-1,271,741.91-513,696.51

Finding the Fourth Proportional to 921,643.08, 1,271,741.91 and 513,696.51

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Solution

The fourth proportional to 921,643.08, 1,271,741.91 and 513,696.51 is: 708,831.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,643.08 : 1,271,741.91 = 513,696.51 : x
  2. Step 2: Convert to fraction form
    921,643.08/1,271,741.91 = 513,696.51/x
  3. Step 3: Cross multiply
    921,643.08x = 1,271,741.91 × 513,696.51
  4. Step 4: Simplify right side
    921,643.08x = 653,289,380,787.73
  5. Step 5: Solve for x
    x = 653,289,380,787.73/921,643.08
  6. Step 6: Final answer
    x = 708,831.21

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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.