Home / 809,756.47-1,215,371.85-430,995.25

Finding the Fourth Proportional to 809,756.47, 1,215,371.85 and 430,995.25

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Solution

The fourth proportional to 809,756.47, 1,215,371.85 and 430,995.25 is: 646,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,756.47 : 1,215,371.85 = 430,995.25 : x
  2. Step 2: Convert to fraction form
    809,756.47/1,215,371.85 = 430,995.25/x
  3. Step 3: Cross multiply
    809,756.47x = 1,215,371.85 × 430,995.25
  4. Step 4: Simplify right side
    809,756.47x = 523,819,494,333.71
  5. Step 5: Solve for x
    x = 523,819,494,333.71/809,756.47
  6. Step 6: Final answer
    x = 646,885.22

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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.