Home / 921,516.54-1,271,647.80-513,662.82

Finding the Fourth Proportional to 921,516.54, 1,271,647.80 and 513,662.82

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Solution

The fourth proportional to 921,516.54, 1,271,647.80 and 513,662.82 is: 708,829.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,516.54 : 1,271,647.80 = 513,662.82 : x
  2. Step 2: Convert to fraction form
    921,516.54/1,271,647.80 = 513,662.82/x
  3. Step 3: Cross multiply
    921,516.54x = 1,271,647.80 × 513,662.82
  4. Step 4: Simplify right side
    921,516.54x = 653,198,194,994.80
  5. Step 5: Solve for x
    x = 653,198,194,994.80/921,516.54
  6. Step 6: Final answer
    x = 708,829.59

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Double scale
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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.