Home / 805,436.32-1,111,479.12-442,859.68

Finding the Fourth Proportional to 805,436.32, 1,111,479.12 and 442,859.68

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Solution

The fourth proportional to 805,436.32, 1,111,479.12 and 442,859.68 is: 611,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,436.32 : 1,111,479.12 = 442,859.68 : x
  2. Step 2: Convert to fraction form
    805,436.32/1,111,479.12 = 442,859.68/x
  3. Step 3: Cross multiply
    805,436.32x = 1,111,479.12 × 442,859.68
  4. Step 4: Simplify right side
    805,436.32x = 492,229,287,409.88
  5. Step 5: Solve for x
    x = 492,229,287,409.88/805,436.32
  6. Step 6: Final answer
    x = 611,133.71

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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.