Home / 1,101,166.53-1,519,659.89-642,290.19

Finding the Fourth Proportional to 1,101,166.53, 1,519,659.89 and 642,290.19

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Solution

The fourth proportional to 1,101,166.53, 1,519,659.89 and 642,290.19 is: 886,389.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101,166.53 : 1,519,659.89 = 642,290.19 : x
  2. Step 2: Convert to fraction form
    1,101,166.53/1,519,659.89 = 642,290.19/x
  3. Step 3: Cross multiply
    1,101,166.53x = 1,519,659.89 × 642,290.19
  4. Step 4: Simplify right side
    1,101,166.53x = 976,062,636,272.03
  5. Step 5: Solve for x
    x = 976,062,636,272.03/1,101,166.53
  6. Step 6: Final answer
    x = 886,389.67

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Double scale
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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.