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Finding the Fourth Proportional to 579,842.87, 869,555.84 and 200,660.63

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Solution

The fourth proportional to 579,842.87, 869,555.84 and 200,660.63 is: 300,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,842.87 : 869,555.84 = 200,660.63 : x
  2. Step 2: Convert to fraction form
    579,842.87/869,555.84 = 200,660.63/x
  3. Step 3: Cross multiply
    579,842.87x = 869,555.84 × 200,660.63
  4. Step 4: Simplify right side
    579,842.87x = 174,485,617,323.50
  5. Step 5: Solve for x
    x = 174,485,617,323.50/579,842.87
  6. Step 6: Final answer
    x = 300,918.80

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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.