Home / 1,190,631.78-1,785,806.19-391,715.19

Finding the Fourth Proportional to 1,190,631.78, 1,785,806.19 and 391,715.19

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Solution

The fourth proportional to 1,190,631.78, 1,785,806.19 and 391,715.19 is: 587,526.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,631.78 : 1,785,806.19 = 391,715.19 : x
  2. Step 2: Convert to fraction form
    1,190,631.78/1,785,806.19 = 391,715.19/x
  3. Step 3: Cross multiply
    1,190,631.78x = 1,785,806.19 × 391,715.19
  4. Step 4: Simplify right side
    1,190,631.78x = 699,527,411,019.03
  5. Step 5: Solve for x
    x = 699,527,411,019.03/1,190,631.78
  6. Step 6: Final answer
    x = 587,526.24

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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.