Home / 722,979.20-1,084,468.80-687,987.20

Finding the Fourth Proportional to 722,979.20, 1,084,468.80 and 687,987.20

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Solution

The fourth proportional to 722,979.20, 1,084,468.80 and 687,987.20 is: 1,031,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,979.20 : 1,084,468.80 = 687,987.20 : x
  2. Step 2: Convert to fraction form
    722,979.20/1,084,468.80 = 687,987.20/x
  3. Step 3: Cross multiply
    722,979.20x = 1,084,468.80 × 687,987.20
  4. Step 4: Simplify right side
    722,979.20x = 746,100,653,199.36
  5. Step 5: Solve for x
    x = 746,100,653,199.36/722,979.20
  6. Step 6: Final answer
    x = 1,031,980.80

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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.