Home / 919,236.51-1,378,855.17-288,199.53

Finding the Fourth Proportional to 919,236.51, 1,378,855.17 and 288,199.53

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Solution

The fourth proportional to 919,236.51, 1,378,855.17 and 288,199.53 is: 432,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,236.51 : 1,378,855.17 = 288,199.53 : x
  2. Step 2: Convert to fraction form
    919,236.51/1,378,855.17 = 288,199.53/x
  3. Step 3: Cross multiply
    919,236.51x = 1,378,855.17 × 288,199.53
  4. Step 4: Simplify right side
    919,236.51x = 397,385,411,932.07
  5. Step 5: Solve for x
    x = 397,385,411,932.07/919,236.51
  6. Step 6: Final answer
    x = 432,299.42

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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.