Home / 818,999.80-1,228,499.70-535,564.60

Finding the Fourth Proportional to 818,999.80, 1,228,499.70 and 535,564.60

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Solution

The fourth proportional to 818,999.80, 1,228,499.70 and 535,564.60 is: 803,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,999.80 : 1,228,499.70 = 535,564.60 : x
  2. Step 2: Convert to fraction form
    818,999.80/1,228,499.70 = 535,564.60/x
  3. Step 3: Cross multiply
    818,999.80x = 1,228,499.70 × 535,564.60
  4. Step 4: Simplify right side
    818,999.80x = 657,940,950,430.62
  5. Step 5: Solve for x
    x = 657,940,950,430.62/818,999.80
  6. Step 6: Final answer
    x = 803,346.90

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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.