Home / 787,171.34-1,086,290.90-447,639.50

Finding the Fourth Proportional to 787,171.34, 1,086,290.90 and 447,639.50

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Solution

The fourth proportional to 787,171.34, 1,086,290.90 and 447,639.50 is: 617,739.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,171.34 : 1,086,290.90 = 447,639.50 : x
  2. Step 2: Convert to fraction form
    787,171.34/1,086,290.90 = 447,639.50/x
  3. Step 3: Cross multiply
    787,171.34x = 1,086,290.90 × 447,639.50
  4. Step 4: Simplify right side
    787,171.34x = 486,266,715,330.55
  5. Step 5: Solve for x
    x = 486,266,715,330.55/787,171.34
  6. Step 6: Final answer
    x = 617,739.35

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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.