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Finding the Fourth Proportional to 628,458.17, 943,154.95 and 308,781.64

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Solution

The fourth proportional to 628,458.17, 943,154.95 and 308,781.64 is: 463,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,458.17 : 943,154.95 = 308,781.64 : x
  2. Step 2: Convert to fraction form
    628,458.17/943,154.95 = 308,781.64/x
  3. Step 3: Cross multiply
    628,458.17x = 943,154.95 × 308,781.64
  4. Step 4: Simplify right side
    628,458.17x = 291,228,932,235.12
  5. Step 5: Solve for x
    x = 291,228,932,235.12/628,458.17
  6. Step 6: Final answer
    x = 463,402.25

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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.