Home / 1,284,137.55-1,772,109.09-711,177.17

Finding the Fourth Proportional to 1,284,137.55, 1,772,109.09 and 711,177.17

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Solution

The fourth proportional to 1,284,137.55, 1,772,109.09 and 711,177.17 is: 981,424.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,137.55 : 1,772,109.09 = 711,177.17 : x
  2. Step 2: Convert to fraction form
    1,284,137.55/1,772,109.09 = 711,177.17/x
  3. Step 3: Cross multiply
    1,284,137.55x = 1,772,109.09 × 711,177.17
  4. Step 4: Simplify right side
    1,284,137.55x = 1,260,283,518,696.93
  5. Step 5: Solve for x
    x = 1,260,283,518,696.93/1,284,137.55
  6. Step 6: Final answer
    x = 981,424.08

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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.