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Finding the Fourth Proportional to 512,015.40, 768,897.90 and 335,305.80

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Solution

The fourth proportional to 512,015.40, 768,897.90 and 335,305.80 is: 503,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,015.40 : 768,897.90 = 335,305.80 : x
  2. Step 2: Convert to fraction form
    512,015.40/768,897.90 = 335,305.80/x
  3. Step 3: Cross multiply
    512,015.40x = 768,897.90 × 335,305.80
  4. Step 4: Simplify right side
    512,015.40x = 257,815,925,477.82
  5. Step 5: Solve for x
    x = 257,815,925,477.82/512,015.40
  6. Step 6: Final answer
    x = 503,531.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.