Home / 816,636.32-1,127,009.20-454,141.28

Finding the Fourth Proportional to 816,636.32, 1,127,009.20 and 454,141.28

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Solution

The fourth proportional to 816,636.32, 1,127,009.20 and 454,141.28 is: 626,743.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,636.32 : 1,127,009.20 = 454,141.28 : x
  2. Step 2: Convert to fraction form
    816,636.32/1,127,009.20 = 454,141.28/x
  3. Step 3: Cross multiply
    816,636.32x = 1,127,009.20 × 454,141.28
  4. Step 4: Simplify right side
    816,636.32x = 511,821,400,659.78
  5. Step 5: Solve for x
    x = 511,821,400,659.78/816,636.32
  6. Step 6: Final answer
    x = 626,743.37

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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.