Home / 874,812.40-1,312,218.60-764,220.40

Finding the Fourth Proportional to 874,812.40, 1,312,218.60 and 764,220.40

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Solution

The fourth proportional to 874,812.40, 1,312,218.60 and 764,220.40 is: 1,146,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,812.40 : 1,312,218.60 = 764,220.40 : x
  2. Step 2: Convert to fraction form
    874,812.40/1,312,218.60 = 764,220.40/x
  3. Step 3: Cross multiply
    874,812.40x = 1,312,218.60 × 764,220.40
  4. Step 4: Simplify right side
    874,812.40x = 1,002,824,223,379.44
  5. Step 5: Solve for x
    x = 1,002,824,223,379.44/874,812.40
  6. Step 6: Final answer
    x = 1,146,330.60

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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.