Home / 786,691.20-1,085,353.92-464,239.92

Finding the Fourth Proportional to 786,691.20, 1,085,353.92 and 464,239.92

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Solution

The fourth proportional to 786,691.20, 1,085,353.92 and 464,239.92 is: 640,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,691.20 : 1,085,353.92 = 464,239.92 : x
  2. Step 2: Convert to fraction form
    786,691.20/1,085,353.92 = 464,239.92/x
  3. Step 3: Cross multiply
    786,691.20x = 1,085,353.92 × 464,239.92
  4. Step 4: Simplify right side
    786,691.20x = 503,864,616,992.49
  5. Step 5: Solve for x
    x = 503,864,616,992.49/786,691.20
  6. Step 6: Final answer
    x = 640,485.89

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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.