Home / 807,648.14-1,114,619.37-445,145.78

Finding the Fourth Proportional to 807,648.14, 1,114,619.37 and 445,145.78

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Solution

The fourth proportional to 807,648.14, 1,114,619.37 and 445,145.78 is: 614,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,648.14 : 1,114,619.37 = 445,145.78 : x
  2. Step 2: Convert to fraction form
    807,648.14/1,114,619.37 = 445,145.78/x
  3. Step 3: Cross multiply
    807,648.14x = 1,114,619.37 × 445,145.78
  4. Step 4: Simplify right side
    807,648.14x = 496,168,108,861.76
  5. Step 5: Solve for x
    x = 496,168,108,861.76/807,648.14
  6. Step 6: Final answer
    x = 614,336.97

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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.