Home / 805,383.36-1,111,436.40-442,809.54

Finding the Fourth Proportional to 805,383.36, 1,111,436.40 and 442,809.54

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Solution

The fourth proportional to 805,383.36, 1,111,436.40 and 442,809.54 is: 611,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,383.36 : 1,111,436.40 = 442,809.54 : x
  2. Step 2: Convert to fraction form
    805,383.36/1,111,436.40 = 442,809.54/x
  3. Step 3: Cross multiply
    805,383.36x = 1,111,436.40 × 442,809.54
  4. Step 4: Simplify right side
    805,383.36x = 492,154,641,023.26
  5. Step 5: Solve for x
    x = 492,154,641,023.26/805,383.36
  6. Step 6: Final answer
    x = 611,081.21

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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.