Home / 1,242,924.80-1,864,387.20-770,532.80

Finding the Fourth Proportional to 1,242,924.80, 1,864,387.20 and 770,532.80

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Solution

The fourth proportional to 1,242,924.80, 1,864,387.20 and 770,532.80 is: 1,155,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,924.80 : 1,864,387.20 = 770,532.80 : x
  2. Step 2: Convert to fraction form
    1,242,924.80/1,864,387.20 = 770,532.80/x
  3. Step 3: Cross multiply
    1,242,924.80x = 1,864,387.20 × 770,532.80
  4. Step 4: Simplify right side
    1,242,924.80x = 1,436,571,489,500.16
  5. Step 5: Solve for x
    x = 1,436,571,489,500.16/1,242,924.80
  6. Step 6: Final answer
    x = 1,155,799.20

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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.