Home / 1,335,009.60-2,002,514.40-978,091.20

Finding the Fourth Proportional to 1,335,009.60, 2,002,514.40 and 978,091.20

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Solution

The fourth proportional to 1,335,009.60, 2,002,514.40 and 978,091.20 is: 1,467,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,009.60 : 2,002,514.40 = 978,091.20 : x
  2. Step 2: Convert to fraction form
    1,335,009.60/2,002,514.40 = 978,091.20/x
  3. Step 3: Cross multiply
    1,335,009.60x = 2,002,514.40 × 978,091.20
  4. Step 4: Simplify right side
    1,335,009.60x = 1,958,641,712,513.28
  5. Step 5: Solve for x
    x = 1,958,641,712,513.28/1,335,009.60
  6. Step 6: Final answer
    x = 1,467,136.80

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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.