Home / 1,312,138.80-1,968,208.20-470,775.60

Finding the Fourth Proportional to 1,312,138.80, 1,968,208.20 and 470,775.60

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Solution

The fourth proportional to 1,312,138.80, 1,968,208.20 and 470,775.60 is: 706,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,138.80 : 1,968,208.20 = 470,775.60 : x
  2. Step 2: Convert to fraction form
    1,312,138.80/1,968,208.20 = 470,775.60/x
  3. Step 3: Cross multiply
    1,312,138.80x = 1,968,208.20 × 470,775.60
  4. Step 4: Simplify right side
    1,312,138.80x = 926,584,396,279.92
  5. Step 5: Solve for x
    x = 926,584,396,279.92/1,312,138.80
  6. Step 6: Final answer
    x = 706,163.40

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Double scale
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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.