Home / 686,100.75-946,819.04-417,828.75

Finding the Fourth Proportional to 686,100.75, 946,819.04 and 417,828.75

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Solution

The fourth proportional to 686,100.75, 946,819.04 and 417,828.75 is: 576,603.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,100.75 : 946,819.04 = 417,828.75 : x
  2. Step 2: Convert to fraction form
    686,100.75/946,819.04 = 417,828.75/x
  3. Step 3: Cross multiply
    686,100.75x = 946,819.04 × 417,828.75
  4. Step 4: Simplify right side
    686,100.75x = 395,608,215,959.40
  5. Step 5: Solve for x
    x = 395,608,215,959.40/686,100.75
  6. Step 6: Final answer
    x = 576,603.68

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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.