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Finding the Fourth Proportional to 556,955.57, 768,466.97 and 315,238.15

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Solution

The fourth proportional to 556,955.57, 768,466.97 and 315,238.15 is: 434,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,955.57 : 768,466.97 = 315,238.15 : x
  2. Step 2: Convert to fraction form
    556,955.57/768,466.97 = 315,238.15/x
  3. Step 3: Cross multiply
    556,955.57x = 768,466.97 × 315,238.15
  4. Step 4: Simplify right side
    556,955.57x = 242,250,105,958.91
  5. Step 5: Solve for x
    x = 242,250,105,958.91/556,955.57
  6. Step 6: Final answer
    x = 434,954.10

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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.