Home / 691,258.90-1,036,888.35-407,823.70

Finding the Fourth Proportional to 691,258.90, 1,036,888.35 and 407,823.70

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Solution

The fourth proportional to 691,258.90, 1,036,888.35 and 407,823.70 is: 611,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,258.90 : 1,036,888.35 = 407,823.70 : x
  2. Step 2: Convert to fraction form
    691,258.90/1,036,888.35 = 407,823.70/x
  3. Step 3: Cross multiply
    691,258.90x = 1,036,888.35 × 407,823.70
  4. Step 4: Simplify right side
    691,258.90x = 422,867,643,383.90
  5. Step 5: Solve for x
    x = 422,867,643,383.90/691,258.90
  6. Step 6: Final answer
    x = 611,735.55

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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.