Home / 921,504.69-1,271,682.72-513,632.77

Finding the Fourth Proportional to 921,504.69, 1,271,682.72 and 513,632.77

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Solution

The fourth proportional to 921,504.69, 1,271,682.72 and 513,632.77 is: 708,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,504.69 : 1,271,682.72 = 513,632.77 : x
  2. Step 2: Convert to fraction form
    921,504.69/1,271,682.72 = 513,632.77/x
  3. Step 3: Cross multiply
    921,504.69x = 1,271,682.72 × 513,632.77
  4. Step 4: Simplify right side
    921,504.69x = 653,177,914,855.53
  5. Step 5: Solve for x
    x = 653,177,914,855.53/921,504.69
  6. Step 6: Final answer
    x = 708,816.70

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Half scale
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Double scale
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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.