Home / 691,142.37-953,780.94-385,238.19

Finding the Fourth Proportional to 691,142.37, 953,780.94 and 385,238.19

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Solution

The fourth proportional to 691,142.37, 953,780.94 and 385,238.19 is: 531,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,142.37 : 953,780.94 = 385,238.19 : x
  2. Step 2: Convert to fraction form
    691,142.37/953,780.94 = 385,238.19/x
  3. Step 3: Cross multiply
    691,142.37x = 953,780.94 × 385,238.19
  4. Step 4: Simplify right side
    691,142.37x = 367,432,842,982.10
  5. Step 5: Solve for x
    x = 367,432,842,982.10/691,142.37
  6. Step 6: Final answer
    x = 531,631.19

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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.