Home / 525,819.40-788,786.70-509,230.60

Finding the Fourth Proportional to 525,819.40, 788,786.70 and 509,230.60

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Solution

The fourth proportional to 525,819.40, 788,786.70 and 509,230.60 is: 763,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,819.40 : 788,786.70 = 509,230.60 : x
  2. Step 2: Convert to fraction form
    525,819.40/788,786.70 = 509,230.60/x
  3. Step 3: Cross multiply
    525,819.40x = 788,786.70 × 509,230.60
  4. Step 4: Simplify right side
    525,819.40x = 401,674,324,513.02
  5. Step 5: Solve for x
    x = 401,674,324,513.02/525,819.40
  6. Step 6: Final answer
    x = 763,901.68

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Double scale
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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.