Home / 691,190.34-1,036,926.63-391,804.62

Finding the Fourth Proportional to 691,190.34, 1,036,926.63 and 391,804.62

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Solution

The fourth proportional to 691,190.34, 1,036,926.63 and 391,804.62 is: 587,786.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,190.34 : 1,036,926.63 = 391,804.62 : x
  2. Step 2: Convert to fraction form
    691,190.34/1,036,926.63 = 391,804.62/x
  3. Step 3: Cross multiply
    691,190.34x = 1,036,926.63 × 391,804.62
  4. Step 4: Simplify right side
    691,190.34x = 406,272,644,235.03
  5. Step 5: Solve for x
    x = 406,272,644,235.03/691,190.34
  6. Step 6: Final answer
    x = 587,786.92

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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.