Home / 805,441.57-1,111,513.44-442,888.76

Finding the Fourth Proportional to 805,441.57, 1,111,513.44 and 442,888.76

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Solution

The fourth proportional to 805,441.57, 1,111,513.44 and 442,888.76 is: 611,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,441.57 : 1,111,513.44 = 442,888.76 : x
  2. Step 2: Convert to fraction form
    805,441.57/1,111,513.44 = 442,888.76/x
  3. Step 3: Cross multiply
    805,441.57x = 1,111,513.44 × 442,888.76
  4. Step 4: Simplify right side
    805,441.57x = 492,276,811,113.30
  5. Step 5: Solve for x
    x = 492,276,811,113.30/805,441.57
  6. Step 6: Final answer
    x = 611,188.73

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Double scale
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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.