Home / 689,890.64-952,080.39-383,986.58

Finding the Fourth Proportional to 689,890.64, 952,080.39 and 383,986.58

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Solution

The fourth proportional to 689,890.64, 952,080.39 and 383,986.58 is: 529,918.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,890.64 : 952,080.39 = 383,986.58 : x
  2. Step 2: Convert to fraction form
    689,890.64/952,080.39 = 383,986.58/x
  3. Step 3: Cross multiply
    689,890.64x = 952,080.39 × 383,986.58
  4. Step 4: Simplify right side
    689,890.64x = 365,586,088,080.76
  5. Step 5: Solve for x
    x = 365,586,088,080.76/689,890.64
  6. Step 6: Final answer
    x = 529,918.90

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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.