Home / 390,212,861.32-585,318,987.42-117,583,631.56

Finding the Fourth Proportional to 390,212,861.32, 585,318,987.42 and 117,583,631.56

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Solution

The fourth proportional to 390,212,861.32, 585,318,987.42 and 117,583,631.56 is: 176,375,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,212,861.32 : 585,318,987.42 = 117,583,631.56 : x
  2. Step 2: Convert to fraction form
    390,212,861.32/585,318,987.42 = 117,583,631.56/x
  3. Step 3: Cross multiply
    390,212,861.32x = 585,318,987.42 × 117,583,631.56
  4. Step 4: Simplify right side
    390,212,861.32x = 68,823,932,161,865,552
  5. Step 5: Solve for x
    x = 68,823,932,161,865,552/390,212,861.32
  6. Step 6: Final answer
    x = 176,375,355.57

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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.