Home / 520,072,902.10-717,700,431.72-285,118,517.89

Finding the Fourth Proportional to 520,072,902.10, 717,700,431.72 and 285,118,517.89

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Solution

The fourth proportional to 520,072,902.10, 717,700,431.72 and 285,118,517.89 is: 393,463,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,072,902.10 : 717,700,431.72 = 285,118,517.89 : x
  2. Step 2: Convert to fraction form
    520,072,902.10/717,700,431.72 = 285,118,517.89/x
  3. Step 3: Cross multiply
    520,072,902.10x = 717,700,431.72 × 285,118,517.89
  4. Step 4: Simplify right side
    520,072,902.10x = 204,629,683,381,019,552
  5. Step 5: Solve for x
    x = 204,629,683,381,019,552/520,072,902.10
  6. Step 6: Final answer
    x = 393,463,459.75

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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.