Home / 810,243.45-1,118,158.51-447,690.67

Finding the Fourth Proportional to 810,243.45, 1,118,158.51 and 447,690.67

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Solution

The fourth proportional to 810,243.45, 1,118,158.51 and 447,690.67 is: 617,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,243.45 : 1,118,158.51 = 447,690.67 : x
  2. Step 2: Convert to fraction form
    810,243.45/1,118,158.51 = 447,690.67/x
  3. Step 3: Cross multiply
    810,243.45x = 1,118,158.51 × 447,690.67
  4. Step 4: Simplify right side
    810,243.45x = 500,589,132,508.10
  5. Step 5: Solve for x
    x = 500,589,132,508.10/810,243.45
  6. Step 6: Final answer
    x = 617,825.58

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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.