Home / 769,871.80-1,154,807.70-208,906.30

Finding the Fourth Proportional to 769,871.80, 1,154,807.70 and 208,906.30

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Solution

The fourth proportional to 769,871.80, 1,154,807.70 and 208,906.30 is: 313,359.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,871.80 : 1,154,807.70 = 208,906.30 : x
  2. Step 2: Convert to fraction form
    769,871.80/1,154,807.70 = 208,906.30/x
  3. Step 3: Cross multiply
    769,871.80x = 1,154,807.70 × 208,906.30
  4. Step 4: Simplify right side
    769,871.80x = 241,246,603,818.51
  5. Step 5: Solve for x
    x = 241,246,603,818.51/769,871.80
  6. Step 6: Final answer
    x = 313,359.45

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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.