Home / 472,392,486.40-708,588,729.60-427,193,429.35

Finding the Fourth Proportional to 472,392,486.40, 708,588,729.60 and 427,193,429.35

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Solution

The fourth proportional to 472,392,486.40, 708,588,729.60 and 427,193,429.35 is: 640,790,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,486.40 : 708,588,729.60 = 427,193,429.35 : x
  2. Step 2: Convert to fraction form
    472,392,486.40/708,588,729.60 = 427,193,429.35/x
  3. Step 3: Cross multiply
    472,392,486.40x = 708,588,729.60 × 427,193,429.35
  4. Step 4: Simplify right side
    472,392,486.40x = 302,704,449,396,583,872
  5. Step 5: Solve for x
    x = 302,704,449,396,583,872/472,392,486.40
  6. Step 6: Final answer
    x = 640,790,144.03

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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.