Home / 830,011.80-1,245,017.70-756,528.60

Finding the Fourth Proportional to 830,011.80, 1,245,017.70 and 756,528.60

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Solution

The fourth proportional to 830,011.80, 1,245,017.70 and 756,528.60 is: 1,134,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,011.80 : 1,245,017.70 = 756,528.60 : x
  2. Step 2: Convert to fraction form
    830,011.80/1,245,017.70 = 756,528.60/x
  3. Step 3: Cross multiply
    830,011.80x = 1,245,017.70 × 756,528.60
  4. Step 4: Simplify right side
    830,011.80x = 941,891,497,556.22
  5. Step 5: Solve for x
    x = 941,891,497,556.22/830,011.80
  6. Step 6: Final answer
    x = 1,134,792.90

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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.