Home / 819,007.80-1,228,511.70-535,572.60

Finding the Fourth Proportional to 819,007.80, 1,228,511.70 and 535,572.60

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Solution

The fourth proportional to 819,007.80, 1,228,511.70 and 535,572.60 is: 803,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,007.80 : 1,228,511.70 = 535,572.60 : x
  2. Step 2: Convert to fraction form
    819,007.80/1,228,511.70 = 535,572.60/x
  3. Step 3: Cross multiply
    819,007.80x = 1,228,511.70 × 535,572.60
  4. Step 4: Simplify right side
    819,007.80x = 657,957,205,299.42
  5. Step 5: Solve for x
    x = 657,957,205,299.42/819,007.80
  6. Step 6: Final answer
    x = 803,358.90

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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.