Home / 862,805.21-1,190,675.18-500,443.61

Finding the Fourth Proportional to 862,805.21, 1,190,675.18 and 500,443.61

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Solution

The fourth proportional to 862,805.21, 1,190,675.18 and 500,443.61 is: 690,614.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,805.21 : 1,190,675.18 = 500,443.61 : x
  2. Step 2: Convert to fraction form
    862,805.21/1,190,675.18 = 500,443.61/x
  3. Step 3: Cross multiply
    862,805.21x = 1,190,675.18 × 500,443.61
  4. Step 4: Simplify right side
    862,805.21x = 595,865,782,914.38
  5. Step 5: Solve for x
    x = 595,865,782,914.38/862,805.21
  6. Step 6: Final answer
    x = 690,614.49

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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.