Home / 1,521,129.27-2,100,580.83-978,207.87

Finding the Fourth Proportional to 1,521,129.27, 2,100,580.83 and 978,207.87

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Solution

The fourth proportional to 1,521,129.27, 2,100,580.83 and 978,207.87 is: 1,350,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,129.27 : 2,100,580.83 = 978,207.87 : x
  2. Step 2: Convert to fraction form
    1,521,129.27/2,100,580.83 = 978,207.87/x
  3. Step 3: Cross multiply
    1,521,129.27x = 2,100,580.83 × 978,207.87
  4. Step 4: Simplify right side
    1,521,129.27x = 2,054,804,699,477.13
  5. Step 5: Solve for x
    x = 2,054,804,699,477.13/1,521,129.27
  6. Step 6: Final answer
    x = 1,350,841.60

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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.