Home / 1,617,668.80-2,426,503.20-821,406.40

Finding the Fourth Proportional to 1,617,668.80, 2,426,503.20 and 821,406.40

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Solution

The fourth proportional to 1,617,668.80, 2,426,503.20 and 821,406.40 is: 1,232,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617,668.80 : 2,426,503.20 = 821,406.40 : x
  2. Step 2: Convert to fraction form
    1,617,668.80/2,426,503.20 = 821,406.40/x
  3. Step 3: Cross multiply
    1,617,668.80x = 2,426,503.20 × 821,406.40
  4. Step 4: Simplify right side
    1,617,668.80x = 1,993,145,258,100.48
  5. Step 5: Solve for x
    x = 1,993,145,258,100.48/1,617,668.80
  6. Step 6: Final answer
    x = 1,232,109.60

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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.