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Finding the Fourth Proportional to 959,428, 1,322,779.92 and 786,709.60

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Solution

The fourth proportional to 959,428, 1,322,779.92 and 786,709.60 is: 1,084,650.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    959,428 : 1,322,779.92 = 786,709.60 : x
  2. Step 2: Convert to fraction form
    959,428/1,322,779.92 = 786,709.60/x
  3. Step 3: Cross multiply
    959,428x = 1,322,779.92 × 786,709.60
  4. Step 4: Simplify right side
    959,428x = 1,040,643,661,751.23
  5. Step 5: Solve for x
    x = 1,040,643,661,751.23/959,428
  6. Step 6: Final answer
    x = 1,084,650.08

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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.