Home / 783,140.80-1,174,711.20-543,992.35

Finding the Fourth Proportional to 783,140.80, 1,174,711.20 and 543,992.35

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Solution

The fourth proportional to 783,140.80, 1,174,711.20 and 543,992.35 is: 815,988.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,140.80 : 1,174,711.20 = 543,992.35 : x
  2. Step 2: Convert to fraction form
    783,140.80/1,174,711.20 = 543,992.35/x
  3. Step 3: Cross multiply
    783,140.80x = 1,174,711.20 × 543,992.35
  4. Step 4: Simplify right side
    783,140.80x = 639,033,906,259.32
  5. Step 5: Solve for x
    x = 639,033,906,259.32/783,140.80
  6. Step 6: Final answer
    x = 815,988.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.