Home / 1,223,516.75-1,689,066.60-764,886.20

Finding the Fourth Proportional to 1,223,516.75, 1,689,066.60 and 764,886.20

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Solution

The fourth proportional to 1,223,516.75, 1,689,066.60 and 764,886.20 is: 1,055,926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,516.75 : 1,689,066.60 = 764,886.20 : x
  2. Step 2: Convert to fraction form
    1,223,516.75/1,689,066.60 = 764,886.20/x
  3. Step 3: Cross multiply
    1,223,516.75x = 1,689,066.60 × 764,886.20
  4. Step 4: Simplify right side
    1,223,516.75x = 1,291,943,733,220.92
  5. Step 5: Solve for x
    x = 1,291,943,733,220.92/1,223,516.75
  6. Step 6: Final answer
    x = 1,055,926.48

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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.