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Finding the Fourth Proportional to 538,659.60, 807,989.40 and 314,273.40

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Solution

The fourth proportional to 538,659.60, 807,989.40 and 314,273.40 is: 471,410.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,659.60 : 807,989.40 = 314,273.40 : x
  2. Step 2: Convert to fraction form
    538,659.60/807,989.40 = 314,273.40/x
  3. Step 3: Cross multiply
    538,659.60x = 807,989.40 × 314,273.40
  4. Step 4: Simplify right side
    538,659.60x = 253,929,575,901.96
  5. Step 5: Solve for x
    x = 253,929,575,901.96/538,659.60
  6. Step 6: Final answer
    x = 471,410.10

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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.