Home / 1,284,199,867.80-1,772,087,578.56-711,998,188.74

Finding the Fourth Proportional to 1,284,199,867.80, 1,772,087,578.56 and 711,998,188.74

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Solution

The fourth proportional to 1,284,199,867.80, 1,772,087,578.56 and 711,998,188.74 is: 982,497,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,199,867.80 : 1,772,087,578.56 = 711,998,188.74 : x
  2. Step 2: Convert to fraction form
    1,284,199,867.80/1,772,087,578.56 = 711,998,188.74/x
  3. Step 3: Cross multiply
    1,284,199,867.80x = 1,772,087,578.56 × 711,998,188.74
  4. Step 4: Simplify right side
    1,284,199,867.80x = 1,261,723,146,223,372,544
  5. Step 5: Solve for x
    x = 1,261,723,146,223,372,544/1,284,199,867.80
  6. Step 6: Final answer
    x = 982,497,489.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.