Home / 830,079.80-1,245,119.70-469,880.90

Finding the Fourth Proportional to 830,079.80, 1,245,119.70 and 469,880.90

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Solution

The fourth proportional to 830,079.80, 1,245,119.70 and 469,880.90 is: 704,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,079.80 : 1,245,119.70 = 469,880.90 : x
  2. Step 2: Convert to fraction form
    830,079.80/1,245,119.70 = 469,880.90/x
  3. Step 3: Cross multiply
    830,079.80x = 1,245,119.70 × 469,880.90
  4. Step 4: Simplify right side
    830,079.80x = 585,057,965,243.73
  5. Step 5: Solve for x
    x = 585,057,965,243.73/830,079.80
  6. Step 6: Final answer
    x = 704,821.35

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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.