Home / 472,392,480.40-708,588,720.60-427,193,423.35

Finding the Fourth Proportional to 472,392,480.40, 708,588,720.60 and 427,193,423.35

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Solution

The fourth proportional to 472,392,480.40, 708,588,720.60 and 427,193,423.35 is: 640,790,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,480.40 : 708,588,720.60 = 427,193,423.35 : x
  2. Step 2: Convert to fraction form
    472,392,480.40/708,588,720.60 = 427,193,423.35/x
  3. Step 3: Cross multiply
    472,392,480.40x = 708,588,720.60 × 427,193,423.35
  4. Step 4: Simplify right side
    472,392,480.40x = 302,704,441,300,310,720
  5. Step 5: Solve for x
    x = 302,704,441,300,310,720/472,392,480.40
  6. Step 6: Final answer
    x = 640,790,135.03

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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.