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Finding the Fourth Proportional to 557,846.38, 769,850.90 and 316,126.38

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Solution

The fourth proportional to 557,846.38, 769,850.90 and 316,126.38 is: 436,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,846.38 : 769,850.90 = 316,126.38 : x
  2. Step 2: Convert to fraction form
    557,846.38/769,850.90 = 316,126.38/x
  3. Step 3: Cross multiply
    557,846.38x = 769,850.90 × 316,126.38
  4. Step 4: Simplify right side
    557,846.38x = 243,370,178,156.74
  5. Step 5: Solve for x
    x = 243,370,178,156.74/557,846.38
  6. Step 6: Final answer
    x = 436,267.38

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Double scale
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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.