Home / 1,284,784.32-1,772,979.39-711,813

Finding the Fourth Proportional to 1,284,784.32, 1,772,979.39 and 711,813

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Solution

The fourth proportional to 1,284,784.32, 1,772,979.39 and 711,813 is: 982,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,784.32 : 1,772,979.39 = 711,813 : x
  2. Step 2: Convert to fraction form
    1,284,784.32/1,772,979.39 = 711,813/x
  3. Step 3: Cross multiply
    1,284,784.32x = 1,772,979.39 × 711,813
  4. Step 4: Simplify right side
    1,284,784.32x = 1,262,029,778,534.07
  5. Step 5: Solve for x
    x = 1,262,029,778,534.07/1,284,784.32
  6. Step 6: Final answer
    x = 982,289.21

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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.