Home / 805,441.68-1,111,485.88-442,865.20

Finding the Fourth Proportional to 805,441.68, 1,111,485.88 and 442,865.20

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Solution

The fourth proportional to 805,441.68, 1,111,485.88 and 442,865.20 is: 611,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,441.68 : 1,111,485.88 = 442,865.20 : x
  2. Step 2: Convert to fraction form
    805,441.68/1,111,485.88 = 442,865.20/x
  3. Step 3: Cross multiply
    805,441.68x = 1,111,485.88 × 442,865.20
  4. Step 4: Simplify right side
    805,441.68x = 492,238,416,543.38
  5. Step 5: Solve for x
    x = 492,238,416,543.38/805,441.68
  6. Step 6: Final answer
    x = 611,140.98

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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.