Home / 3,389,767.68-5,084,643.84-865,420.80

Finding the Fourth Proportional to 3,389,767.68, 5,084,643.84 and 865,420.80

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Solution

The fourth proportional to 3,389,767.68, 5,084,643.84 and 865,420.80 is: 1,298,129.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389,767.68 : 5,084,643.84 = 865,420.80 : x
  2. Step 2: Convert to fraction form
    3,389,767.68/5,084,643.84 = 865,420.80/x
  3. Step 3: Cross multiply
    3,389,767.68x = 5,084,643.84 × 865,420.80
  4. Step 4: Simplify right side
    3,389,767.68x = 4,400,356,539,727.87
  5. Step 5: Solve for x
    x = 4,400,356,539,727.87/3,389,767.68
  6. Step 6: Final answer
    x = 1,298,129.24

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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.