Home / 921,520.55-1,271,704.26-513,648.25

Finding the Fourth Proportional to 921,520.55, 1,271,704.26 and 513,648.25

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Solution

The fourth proportional to 921,520.55, 1,271,704.26 and 513,648.25 is: 708,837.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,520.55 : 1,271,704.26 = 513,648.25 : x
  2. Step 2: Convert to fraction form
    921,520.55/1,271,704.26 = 513,648.25/x
  3. Step 3: Cross multiply
    921,520.55x = 1,271,704.26 × 513,648.25
  4. Step 4: Simplify right side
    921,520.55x = 653,208,658,739.78
  5. Step 5: Solve for x
    x = 653,208,658,739.78/921,520.55
  6. Step 6: Final answer
    x = 708,837.87

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Half scale
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Double scale
Find fourth proportional to 921,521.55, 1,271,705.64 and 513,649.25
Similar ratio
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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.