Home / 805,609.90-1,111,719.48-443,033.76

Finding the Fourth Proportional to 805,609.90, 1,111,719.48 and 443,033.76

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Solution

The fourth proportional to 805,609.90, 1,111,719.48 and 443,033.76 is: 611,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,609.90 : 1,111,719.48 = 443,033.76 : x
  2. Step 2: Convert to fraction form
    805,609.90/1,111,719.48 = 443,033.76/x
  3. Step 3: Cross multiply
    805,609.90x = 1,111,719.48 × 443,033.76
  4. Step 4: Simplify right side
    805,609.90x = 492,529,258,969.52
  5. Step 5: Solve for x
    x = 492,529,258,969.52/805,609.90
  6. Step 6: Final answer
    x = 611,374.39

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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.