Home / 318,915,601.20-478,373,401.80-312,868,983.60

Finding the Fourth Proportional to 318,915,601.20, 478,373,401.80 and 312,868,983.60

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Solution

The fourth proportional to 318,915,601.20, 478,373,401.80 and 312,868,983.60 is: 469,303,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,915,601.20 : 478,373,401.80 = 312,868,983.60 : x
  2. Step 2: Convert to fraction form
    318,915,601.20/478,373,401.80 = 312,868,983.60/x
  3. Step 3: Cross multiply
    318,915,601.20x = 478,373,401.80 × 312,868,983.60
  4. Step 4: Simplify right side
    318,915,601.20x = 149,668,200,002,440,416
  5. Step 5: Solve for x
    x = 149,668,200,002,440,416/318,915,601.20
  6. Step 6: Final answer
    x = 469,303,475.40

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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.