Home / 866,057,412.80-1,299,086,119.20-858,404,662.40

Finding the Fourth Proportional to 866,057,412.80, 1,299,086,119.20 and 858,404,662.40

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Solution

The fourth proportional to 866,057,412.80, 1,299,086,119.20 and 858,404,662.40 is: 1,287,606,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,057,412.80 : 1,299,086,119.20 = 858,404,662.40 : x
  2. Step 2: Convert to fraction form
    866,057,412.80/1,299,086,119.20 = 858,404,662.40/x
  3. Step 3: Cross multiply
    866,057,412.80x = 1,299,086,119.20 × 858,404,662.40
  4. Step 4: Simplify right side
    866,057,412.80x = 1,115,141,581,580,402,176
  5. Step 5: Solve for x
    x = 1,115,141,581,580,402,176/866,057,412.80
  6. Step 6: Final answer
    x = 1,287,606,993.60

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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.