Home / 1,028,721.12-1,419,328-665,569.77

Finding the Fourth Proportional to 1,028,721.12, 1,419,328 and 665,569.77

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Solution

The fourth proportional to 1,028,721.12, 1,419,328 and 665,569.77 is: 918,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,721.12 : 1,419,328 = 665,569.77 : x
  2. Step 2: Convert to fraction form
    1,028,721.12/1,419,328 = 665,569.77/x
  3. Step 3: Cross multiply
    1,028,721.12x = 1,419,328 × 665,569.77
  4. Step 4: Simplify right side
    1,028,721.12x = 944,661,810,514.56
  5. Step 5: Solve for x
    x = 944,661,810,514.56/1,028,721.12
  6. Step 6: Final answer
    x = 918,287.56

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1.5x scale

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.