Home / 874,810.40-1,312,215.60-764,218.40

Finding the Fourth Proportional to 874,810.40, 1,312,215.60 and 764,218.40

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Solution

The fourth proportional to 874,810.40, 1,312,215.60 and 764,218.40 is: 1,146,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,810.40 : 1,312,215.60 = 764,218.40 : x
  2. Step 2: Convert to fraction form
    874,810.40/1,312,215.60 = 764,218.40/x
  3. Step 3: Cross multiply
    874,810.40x = 1,312,215.60 × 764,218.40
  4. Step 4: Simplify right side
    874,810.40x = 1,002,819,306,287.04
  5. Step 5: Solve for x
    x = 1,002,819,306,287.04/874,810.40
  6. Step 6: Final answer
    x = 1,146,327.60

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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.