Home / 1,223,448.80-1,688,302.20-679,619.60

Finding the Fourth Proportional to 1,223,448.80, 1,688,302.20 and 679,619.60

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Solution

The fourth proportional to 1,223,448.80, 1,688,302.20 and 679,619.60 is: 937,843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,448.80 : 1,688,302.20 = 679,619.60 : x
  2. Step 2: Convert to fraction form
    1,223,448.80/1,688,302.20 = 679,619.60/x
  3. Step 3: Cross multiply
    1,223,448.80x = 1,688,302.20 × 679,619.60
  4. Step 4: Simplify right side
    1,223,448.80x = 1,147,403,265,843.12
  5. Step 5: Solve for x
    x = 1,147,403,265,843.12/1,223,448.80
  6. Step 6: Final answer
    x = 937,843.30

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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.