Home / 819,000.70-1,228,501.05-606,424.30

Finding the Fourth Proportional to 819,000.70, 1,228,501.05 and 606,424.30

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Solution

The fourth proportional to 819,000.70, 1,228,501.05 and 606,424.30 is: 909,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,000.70 : 1,228,501.05 = 606,424.30 : x
  2. Step 2: Convert to fraction form
    819,000.70/1,228,501.05 = 606,424.30/x
  3. Step 3: Cross multiply
    819,000.70x = 1,228,501.05 × 606,424.30
  4. Step 4: Simplify right side
    819,000.70x = 744,992,889,295.52
  5. Step 5: Solve for x
    x = 744,992,889,295.52/819,000.70
  6. Step 6: Final answer
    x = 909,636.45

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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.