Home / 1,280,215,513.80-1,919,366,676.90-698,606,483.40

Finding the Fourth Proportional to 1,280,215,513.80, 1,919,366,676.90 and 698,606,483.40

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Solution

The fourth proportional to 1,280,215,513.80, 1,919,366,676.90 and 698,606,483.40 is: 1,047,387,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,215,513.80 : 1,919,366,676.90 = 698,606,483.40 : x
  2. Step 2: Convert to fraction form
    1,280,215,513.80/1,919,366,676.90 = 698,606,483.40/x
  3. Step 3: Cross multiply
    1,280,215,513.80x = 1,919,366,676.90 × 698,606,483.40
  4. Step 4: Simplify right side
    1,280,215,513.80x = 1,340,882,004,504,252,928
  5. Step 5: Solve for x
    x = 1,340,882,004,504,252,928/1,280,215,513.80
  6. Step 6: Final answer
    x = 1,047,387,717.19

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Double scale
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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.