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Finding the Fourth Proportional to 556,803.91, 768,391.41 and 302,155.03

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Solution

The fourth proportional to 556,803.91, 768,391.41 and 302,155.03 is: 416,975.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,803.91 : 768,391.41 = 302,155.03 : x
  2. Step 2: Convert to fraction form
    556,803.91/768,391.41 = 302,155.03/x
  3. Step 3: Cross multiply
    556,803.91x = 768,391.41 × 302,155.03
  4. Step 4: Simplify right side
    556,803.91x = 232,173,329,540.29
  5. Step 5: Solve for x
    x = 232,173,329,540.29/556,803.91
  6. Step 6: Final answer
    x = 416,975.03

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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.