Home / 285,368,803.78-393,810,964.76-154,988,611.78

Finding the Fourth Proportional to 285,368,803.78, 393,810,964.76 and 154,988,611.78

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Solution

The fourth proportional to 285,368,803.78, 393,810,964.76 and 154,988,611.78 is: 213,885,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,368,803.78 : 393,810,964.76 = 154,988,611.78 : x
  2. Step 2: Convert to fraction form
    285,368,803.78/393,810,964.76 = 154,988,611.78/x
  3. Step 3: Cross multiply
    285,368,803.78x = 393,810,964.76 × 154,988,611.78
  4. Step 4: Simplify right side
    285,368,803.78x = 61,036,214,731,894,896
  5. Step 5: Solve for x
    x = 61,036,214,731,894,896/285,368,803.78
  6. Step 6: Final answer
    x = 213,885,378.93

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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.