Home / 923,039.10-1,273,857.87-515,220.30

Finding the Fourth Proportional to 923,039.10, 1,273,857.87 and 515,220.30

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Solution

The fourth proportional to 923,039.10, 1,273,857.87 and 515,220.30 is: 711,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,039.10 : 1,273,857.87 = 515,220.30 : x
  2. Step 2: Convert to fraction form
    923,039.10/1,273,857.87 = 515,220.30/x
  3. Step 3: Cross multiply
    923,039.10x = 1,273,857.87 × 515,220.30
  4. Step 4: Simplify right side
    923,039.10x = 656,317,433,938.76
  5. Step 5: Solve for x
    x = 656,317,433,938.76/923,039.10
  6. Step 6: Final answer
    x = 711,039.69

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.