Home / 1,284,709.12-1,772,828.72-711,715.12

Finding the Fourth Proportional to 1,284,709.12, 1,772,828.72 and 711,715.12

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Solution

The fourth proportional to 1,284,709.12, 1,772,828.72 and 711,715.12 is: 982,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,709.12 : 1,772,828.72 = 711,715.12 : x
  2. Step 2: Convert to fraction form
    1,284,709.12/1,772,828.72 = 711,715.12/x
  3. Step 3: Cross multiply
    1,284,709.12x = 1,772,828.72 × 711,715.12
  4. Step 4: Simplify right side
    1,284,709.12x = 1,261,749,005,194.25
  5. Step 5: Solve for x
    x = 1,261,749,005,194.25/1,284,709.12
  6. Step 6: Final answer
    x = 982,128.16

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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.