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Finding the Fourth Proportional to 557,088.21, 768,791.07 and 302,439.42

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Solution

The fourth proportional to 557,088.21, 768,791.07 and 302,439.42 is: 417,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,088.21 : 768,791.07 = 302,439.42 : x
  2. Step 2: Convert to fraction form
    557,088.21/768,791.07 = 302,439.42/x
  3. Step 3: Cross multiply
    557,088.21x = 768,791.07 × 302,439.42
  4. Step 4: Simplify right side
    557,088.21x = 232,512,725,311.98
  5. Step 5: Solve for x
    x = 232,512,725,311.98/557,088.21
  6. Step 6: Final answer
    x = 417,371.47

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1.5x scale

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.