Home / 821,945.80-1,232,043.90-316,311.40

Finding the Fourth Proportional to 821,945.80, 1,232,043.90 and 316,311.40

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Solution

The fourth proportional to 821,945.80, 1,232,043.90 and 316,311.40 is: 474,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,945.80 : 1,232,043.90 = 316,311.40 : x
  2. Step 2: Convert to fraction form
    821,945.80/1,232,043.90 = 316,311.40/x
  3. Step 3: Cross multiply
    821,945.80x = 1,232,043.90 × 316,311.40
  4. Step 4: Simplify right side
    821,945.80x = 389,709,530,870.46
  5. Step 5: Solve for x
    x = 389,709,530,870.46/821,945.80
  6. Step 6: Final answer
    x = 474,130.45

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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.