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Finding the Fourth Proportional to 630,408,601.80, 945,612,902.70 and 401,392,960.20

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Solution

The fourth proportional to 630,408,601.80, 945,612,902.70 and 401,392,960.20 is: 602,089,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,408,601.80 : 945,612,902.70 = 401,392,960.20 : x
  2. Step 2: Convert to fraction form
    630,408,601.80/945,612,902.70 = 401,392,960.20/x
  3. Step 3: Cross multiply
    630,408,601.80x = 945,612,902.70 × 401,392,960.20
  4. Step 4: Simplify right side
    630,408,601.80x = 379,562,362,218,067,584
  5. Step 5: Solve for x
    x = 379,562,362,218,067,584/630,408,601.80
  6. Step 6: Final answer
    x = 602,089,440.30

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1.5x scale

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.