Home / 804,936.70-1,207,405.05-431,688.70

Finding the Fourth Proportional to 804,936.70, 1,207,405.05 and 431,688.70

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Solution

The fourth proportional to 804,936.70, 1,207,405.05 and 431,688.70 is: 647,533.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,936.70 : 1,207,405.05 = 431,688.70 : x
  2. Step 2: Convert to fraction form
    804,936.70/1,207,405.05 = 431,688.70/x
  3. Step 3: Cross multiply
    804,936.70x = 1,207,405.05 × 431,688.70
  4. Step 4: Simplify right side
    804,936.70x = 521,223,116,407.94
  5. Step 5: Solve for x
    x = 521,223,116,407.94/804,936.70
  6. Step 6: Final answer
    x = 647,533.05

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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.