Home / 1,393,834.16-1,921,455.15-985,215.08

Finding the Fourth Proportional to 1,393,834.16, 1,921,455.15 and 985,215.08

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Solution

The fourth proportional to 1,393,834.16, 1,921,455.15 and 985,215.08 is: 1,358,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,834.16 : 1,921,455.15 = 985,215.08 : x
  2. Step 2: Convert to fraction form
    1,393,834.16/1,921,455.15 = 985,215.08/x
  3. Step 3: Cross multiply
    1,393,834.16x = 1,921,455.15 × 985,215.08
  4. Step 4: Simplify right side
    1,393,834.16x = 1,893,046,589,323.66
  5. Step 5: Solve for x
    x = 1,893,046,589,323.66/1,393,834.16
  6. Step 6: Final answer
    x = 1,358,157.69

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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.