Home / 854,791.30-1,282,186.95-412,423.30

Finding the Fourth Proportional to 854,791.30, 1,282,186.95 and 412,423.30

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Solution

The fourth proportional to 854,791.30, 1,282,186.95 and 412,423.30 is: 618,634.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,791.30 : 1,282,186.95 = 412,423.30 : x
  2. Step 2: Convert to fraction form
    854,791.30/1,282,186.95 = 412,423.30/x
  3. Step 3: Cross multiply
    854,791.30x = 1,282,186.95 × 412,423.30
  4. Step 4: Simplify right side
    854,791.30x = 528,803,773,135.94
  5. Step 5: Solve for x
    x = 528,803,773,135.94/854,791.30
  6. Step 6: Final answer
    x = 618,634.95

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Double scale
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Similar ratio
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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.