Home / 784,902.80-1,177,354.20-311,344.40

Finding the Fourth Proportional to 784,902.80, 1,177,354.20 and 311,344.40

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Solution

The fourth proportional to 784,902.80, 1,177,354.20 and 311,344.40 is: 467,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,902.80 : 1,177,354.20 = 311,344.40 : x
  2. Step 2: Convert to fraction form
    784,902.80/1,177,354.20 = 311,344.40/x
  3. Step 3: Cross multiply
    784,902.80x = 1,177,354.20 × 311,344.40
  4. Step 4: Simplify right side
    784,902.80x = 366,562,636,986.48
  5. Step 5: Solve for x
    x = 366,562,636,986.48/784,902.80
  6. Step 6: Final answer
    x = 467,016.60

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Double scale
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Similar ratio
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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.