Home / 821,912.81-1,232,289.65-316,048.77

Finding the Fourth Proportional to 821,912.81, 1,232,289.65 and 316,048.77

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Solution

The fourth proportional to 821,912.81, 1,232,289.65 and 316,048.77 is: 473,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,912.81 : 1,232,289.65 = 316,048.77 : x
  2. Step 2: Convert to fraction form
    821,912.81/1,232,289.65 = 316,048.77/x
  3. Step 3: Cross multiply
    821,912.81x = 1,232,289.65 × 316,048.77
  4. Step 4: Simplify right side
    821,912.81x = 389,463,628,956.35
  5. Step 5: Solve for x
    x = 389,463,628,956.35/821,912.81
  6. Step 6: Final answer
    x = 473,850.30

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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.