Home / 669,074.68-923,336.77-378,686.23

Finding the Fourth Proportional to 669,074.68, 923,336.77 and 378,686.23

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Solution

The fourth proportional to 669,074.68, 923,336.77 and 378,686.23 is: 522,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,074.68 : 923,336.77 = 378,686.23 : x
  2. Step 2: Convert to fraction form
    669,074.68/923,336.77 = 378,686.23/x
  3. Step 3: Cross multiply
    669,074.68x = 923,336.77 × 378,686.23
  4. Step 4: Simplify right side
    669,074.68x = 349,654,921,813.30
  5. Step 5: Solve for x
    x = 349,654,921,813.30/669,074.68
  6. Step 6: Final answer
    x = 522,594.76

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Half scale
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Double scale
Find fourth proportional to 669,075.68, 923,338.15 and 378,687.23
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.