Home / 818,883,918.80-1,228,325,878.20-543,384,904.40

Finding the Fourth Proportional to 818,883,918.80, 1,228,325,878.20 and 543,384,904.40

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Solution

The fourth proportional to 818,883,918.80, 1,228,325,878.20 and 543,384,904.40 is: 815,077,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,883,918.80 : 1,228,325,878.20 = 543,384,904.40 : x
  2. Step 2: Convert to fraction form
    818,883,918.80/1,228,325,878.20 = 543,384,904.40/x
  3. Step 3: Cross multiply
    818,883,918.80x = 1,228,325,878.20 × 543,384,904.40
  4. Step 4: Simplify right side
    818,883,918.80x = 667,453,739,897,753,088
  5. Step 5: Solve for x
    x = 667,453,739,897,753,088/818,883,918.80
  6. Step 6: Final answer
    x = 815,077,356.60

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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.