Home / 864,103.20-1,296,154.80-509,809.20

Finding the Fourth Proportional to 864,103.20, 1,296,154.80 and 509,809.20

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Solution

The fourth proportional to 864,103.20, 1,296,154.80 and 509,809.20 is: 764,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,103.20 : 1,296,154.80 = 509,809.20 : x
  2. Step 2: Convert to fraction form
    864,103.20/1,296,154.80 = 509,809.20/x
  3. Step 3: Cross multiply
    864,103.20x = 1,296,154.80 × 509,809.20
  4. Step 4: Simplify right side
    864,103.20x = 660,791,641,664.16
  5. Step 5: Solve for x
    x = 660,791,641,664.16/864,103.20
  6. Step 6: Final answer
    x = 764,713.80

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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.