Home / 1,247,330.20-1,871,191.38-405,685.12

Finding the Fourth Proportional to 1,247,330.20, 1,871,191.38 and 405,685.12

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Solution

The fourth proportional to 1,247,330.20, 1,871,191.38 and 405,685.12 is: 608,591.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,330.20 : 1,871,191.38 = 405,685.12 : x
  2. Step 2: Convert to fraction form
    1,247,330.20/1,871,191.38 = 405,685.12/x
  3. Step 3: Cross multiply
    1,247,330.20x = 1,871,191.38 × 405,685.12
  4. Step 4: Simplify right side
    1,247,330.20x = 759,114,499,538.27
  5. Step 5: Solve for x
    x = 759,114,499,538.27/1,247,330.20
  6. Step 6: Final answer
    x = 608,591.45

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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.