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Finding the Fourth Proportional to 561,915.33, 775,519.16 and 316,950.37

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Solution

The fourth proportional to 561,915.33, 775,519.16 and 316,950.37 is: 437,434.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,915.33 : 775,519.16 = 316,950.37 : x
  2. Step 2: Convert to fraction form
    561,915.33/775,519.16 = 316,950.37/x
  3. Step 3: Cross multiply
    561,915.33x = 775,519.16 × 316,950.37
  4. Step 4: Simplify right side
    561,915.33x = 245,801,082,963.39
  5. Step 5: Solve for x
    x = 245,801,082,963.39/561,915.33
  6. Step 6: Final answer
    x = 437,434.38

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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.