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Finding the Fourth Proportional to 1,331,532, 1,837,520.64 and 727,920

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Solution

The fourth proportional to 1,331,532, 1,837,520.64 and 727,920 is: 1,004,533.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,532 : 1,837,520.64 = 727,920 : x
  2. Step 2: Convert to fraction form
    1,331,532/1,837,520.64 = 727,920/x
  3. Step 3: Cross multiply
    1,331,532x = 1,837,520.64 × 727,920
  4. Step 4: Simplify right side
    1,331,532x = 1,337,568,024,268.80
  5. Step 5: Solve for x
    x = 1,337,568,024,268.80/1,331,532
  6. Step 6: Final answer
    x = 1,004,533.14

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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.