Home / 1,112,312.80-1,668,469.20-313,620.40

Finding the Fourth Proportional to 1,112,312.80, 1,668,469.20 and 313,620.40

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Solution

The fourth proportional to 1,112,312.80, 1,668,469.20 and 313,620.40 is: 470,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,312.80 : 1,668,469.20 = 313,620.40 : x
  2. Step 2: Convert to fraction form
    1,112,312.80/1,668,469.20 = 313,620.40/x
  3. Step 3: Cross multiply
    1,112,312.80x = 1,668,469.20 × 313,620.40
  4. Step 4: Simplify right side
    1,112,312.80x = 523,265,977,891.68
  5. Step 5: Solve for x
    x = 523,265,977,891.68/1,112,312.80
  6. Step 6: Final answer
    x = 470,430.60

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Similar ratio
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1.5x scale

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.