Home / 715,115.06-1,072,658.52-288,639.56

Finding the Fourth Proportional to 715,115.06, 1,072,658.52 and 288,639.56

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Solution

The fourth proportional to 715,115.06, 1,072,658.52 and 288,639.56 is: 432,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,115.06 : 1,072,658.52 = 288,639.56 : x
  2. Step 2: Convert to fraction form
    715,115.06/1,072,658.52 = 288,639.56/x
  3. Step 3: Cross multiply
    715,115.06x = 1,072,658.52 × 288,639.56
  4. Step 4: Simplify right side
    715,115.06x = 309,611,683,243.05
  5. Step 5: Solve for x
    x = 309,611,683,243.05/715,115.06
  6. Step 6: Final answer
    x = 432,953.66

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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.