Home / 830,520.20-1,245,780.30-789,048.20

Finding the Fourth Proportional to 830,520.20, 1,245,780.30 and 789,048.20

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Solution

The fourth proportional to 830,520.20, 1,245,780.30 and 789,048.20 is: 1,183,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,520.20 : 1,245,780.30 = 789,048.20 : x
  2. Step 2: Convert to fraction form
    830,520.20/1,245,780.30 = 789,048.20/x
  3. Step 3: Cross multiply
    830,520.20x = 1,245,780.30 × 789,048.20
  4. Step 4: Simplify right side
    830,520.20x = 982,980,703,310.46
  5. Step 5: Solve for x
    x = 982,980,703,310.46/830,520.20
  6. Step 6: Final answer
    x = 1,183,572.30

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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.