Home / 1,521,130.02-2,100,581.87-978,208.62

Finding the Fourth Proportional to 1,521,130.02, 2,100,581.87 and 978,208.62

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Solution

The fourth proportional to 1,521,130.02, 2,100,581.87 and 978,208.62 is: 1,350,842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,130.02 : 2,100,581.87 = 978,208.62 : x
  2. Step 2: Convert to fraction form
    1,521,130.02/2,100,581.87 = 978,208.62/x
  3. Step 3: Cross multiply
    1,521,130.02x = 2,100,581.87 × 978,208.62
  4. Step 4: Simplify right side
    1,521,130.02x = 2,054,807,287,358.68
  5. Step 5: Solve for x
    x = 2,054,807,287,358.68/1,521,130.02
  6. Step 6: Final answer
    x = 1,350,842.64

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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.