Home / 869,936.76-1,200,432.06-487,889.64

Finding the Fourth Proportional to 869,936.76, 1,200,432.06 and 487,889.64

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Solution

The fourth proportional to 869,936.76, 1,200,432.06 and 487,889.64 is: 673,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,936.76 : 1,200,432.06 = 487,889.64 : x
  2. Step 2: Convert to fraction form
    869,936.76/1,200,432.06 = 487,889.64/x
  3. Step 3: Cross multiply
    869,936.76x = 1,200,432.06 × 487,889.64
  4. Step 4: Simplify right side
    869,936.76x = 585,678,365,597.86
  5. Step 5: Solve for x
    x = 585,678,365,597.86/869,936.76
  6. Step 6: Final answer
    x = 673,242.46

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.