Home / 1,133,140.80-1,699,711.20-385,186.80

Finding the Fourth Proportional to 1,133,140.80, 1,699,711.20 and 385,186.80

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Solution

The fourth proportional to 1,133,140.80, 1,699,711.20 and 385,186.80 is: 577,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133,140.80 : 1,699,711.20 = 385,186.80 : x
  2. Step 2: Convert to fraction form
    1,133,140.80/1,699,711.20 = 385,186.80/x
  3. Step 3: Cross multiply
    1,133,140.80x = 1,699,711.20 × 385,186.80
  4. Step 4: Simplify right side
    1,133,140.80x = 654,706,318,052.16
  5. Step 5: Solve for x
    x = 654,706,318,052.16/1,133,140.80
  6. Step 6: Final answer
    x = 577,780.20

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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.