Home / 785,902.90-1,179,311.79-330,461.21

Finding the Fourth Proportional to 785,902.90, 1,179,311.79 and 330,461.21

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Solution

The fourth proportional to 785,902.90, 1,179,311.79 and 330,461.21 is: 495,884.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,902.90 : 1,179,311.79 = 330,461.21 : x
  2. Step 2: Convert to fraction form
    785,902.90/1,179,311.79 = 330,461.21/x
  3. Step 3: Cross multiply
    785,902.90x = 1,179,311.79 × 330,461.21
  4. Step 4: Simplify right side
    785,902.90x = 389,716,795,194.11
  5. Step 5: Solve for x
    x = 389,716,795,194.11/785,902.90
  6. Step 6: Final answer
    x = 495,884.16

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1.5x scale

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.