Home / 691,894.20-1,038,278.70-407,584.20

Finding the Fourth Proportional to 691,894.20, 1,038,278.70 and 407,584.20

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Solution

The fourth proportional to 691,894.20, 1,038,278.70 and 407,584.20 is: 611,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,894.20 : 1,038,278.70 = 407,584.20 : x
  2. Step 2: Convert to fraction form
    691,894.20/1,038,278.70 = 407,584.20/x
  3. Step 3: Cross multiply
    691,894.20x = 1,038,278.70 × 407,584.20
  4. Step 4: Simplify right side
    691,894.20x = 423,185,993,316.54
  5. Step 5: Solve for x
    x = 423,185,993,316.54/691,894.20
  6. Step 6: Final answer
    x = 611,633.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.