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Finding the Fourth Proportional to 647,487.14, 893,297.96 and 375,405.20

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Solution

The fourth proportional to 647,487.14, 893,297.96 and 375,405.20 is: 517,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,487.14 : 893,297.96 = 375,405.20 : x
  2. Step 2: Convert to fraction form
    647,487.14/893,297.96 = 375,405.20/x
  3. Step 3: Cross multiply
    647,487.14x = 893,297.96 × 375,405.20
  4. Step 4: Simplify right side
    647,487.14x = 335,348,692,989.88
  5. Step 5: Solve for x
    x = 335,348,692,989.88/647,487.14
  6. Step 6: Final answer
    x = 517,923.33

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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.