Home / 691,137.23-953,653.74-385,146.54

Finding the Fourth Proportional to 691,137.23, 953,653.74 and 385,146.54

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Solution

The fourth proportional to 691,137.23, 953,653.74 and 385,146.54 is: 531,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,137.23 : 953,653.74 = 385,146.54 : x
  2. Step 2: Convert to fraction form
    691,137.23/953,653.74 = 385,146.54/x
  3. Step 3: Cross multiply
    691,137.23x = 953,653.74 × 385,146.54
  4. Step 4: Simplify right side
    691,137.23x = 367,296,438,319.06
  5. Step 5: Solve for x
    x = 367,296,438,319.06/691,137.23
  6. Step 6: Final answer
    x = 531,437.78

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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.