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Finding the Fourth Proportional to 931,540.80, 1,395,342.90 and 931,540.80

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Solution

The fourth proportional to 931,540.80, 1,395,342.90 and 931,540.80 is: 1,395,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,540.80 : 1,395,342.90 = 931,540.80 : x
  2. Step 2: Convert to fraction form
    931,540.80/1,395,342.90 = 931,540.80/x
  3. Step 3: Cross multiply
    931,540.80x = 1,395,342.90 × 931,540.80
  4. Step 4: Simplify right side
    931,540.80x = 1,299,818,841,340.32
  5. Step 5: Solve for x
    x = 1,299,818,841,340.32/931,540.80
  6. Step 6: Final answer
    x = 1,395,342.90

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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.