Home / 686,144.53-946,929.32-414,278.56

Finding the Fourth Proportional to 686,144.53, 946,929.32 and 414,278.56

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Solution

The fourth proportional to 686,144.53, 946,929.32 and 414,278.56 is: 571,734.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,144.53 : 946,929.32 = 414,278.56 : x
  2. Step 2: Convert to fraction form
    686,144.53/946,929.32 = 414,278.56/x
  3. Step 3: Cross multiply
    686,144.53x = 946,929.32 × 414,278.56
  4. Step 4: Simplify right side
    686,144.53x = 392,292,515,111.38
  5. Step 5: Solve for x
    x = 392,292,515,111.38/686,144.53
  6. Step 6: Final answer
    x = 571,734.52

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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.