Home / 1,221,760,787.40-1,832,641,181.10-445,431,774.60

Finding the Fourth Proportional to 1,221,760,787.40, 1,832,641,181.10 and 445,431,774.60

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Solution

The fourth proportional to 1,221,760,787.40, 1,832,641,181.10 and 445,431,774.60 is: 668,147,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,760,787.40 : 1,832,641,181.10 = 445,431,774.60 : x
  2. Step 2: Convert to fraction form
    1,221,760,787.40/1,832,641,181.10 = 445,431,774.60/x
  3. Step 3: Cross multiply
    1,221,760,787.40x = 1,832,641,181.10 × 445,431,774.60
  4. Step 4: Simplify right side
    1,221,760,787.40x = 816,316,613,502,412,928
  5. Step 5: Solve for x
    x = 816,316,613,502,412,928/1,221,760,787.40
  6. Step 6: Final answer
    x = 668,147,661.90

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Double scale
Find fourth proportional to 1,221,760,788.40, 1,832,641,182.60 and 445,431,775.60
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.