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Finding the Fourth Proportional to 557,990.46, 770,087.04 and 316,247.09

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Solution

The fourth proportional to 557,990.46, 770,087.04 and 316,247.09 is: 436,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,990.46 : 770,087.04 = 316,247.09 : x
  2. Step 2: Convert to fraction form
    557,990.46/770,087.04 = 316,247.09/x
  3. Step 3: Cross multiply
    557,990.46x = 770,087.04 × 316,247.09
  4. Step 4: Simplify right side
    557,990.46x = 243,537,784,786.85
  5. Step 5: Solve for x
    x = 243,537,784,786.85/557,990.46
  6. Step 6: Final answer
    x = 436,455.10

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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.