Home / 939,561.11-1,409,344.40-399,678.29

Finding the Fourth Proportional to 939,561.11, 1,409,344.40 and 399,678.29

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Solution

The fourth proportional to 939,561.11, 1,409,344.40 and 399,678.29 is: 599,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,561.11 : 1,409,344.40 = 399,678.29 : x
  2. Step 2: Convert to fraction form
    939,561.11/1,409,344.40 = 399,678.29/x
  3. Step 3: Cross multiply
    939,561.11x = 1,409,344.40 × 399,678.29
  4. Step 4: Simplify right side
    939,561.11x = 563,284,359,813.08
  5. Step 5: Solve for x
    x = 563,284,359,813.08/939,561.11
  6. Step 6: Final answer
    x = 599,518.60

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