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Finding the Fourth Proportional to 559,918.58, 772,654.34 and 318,167.60

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Solution

The fourth proportional to 559,918.58, 772,654.34 and 318,167.60 is: 439,052.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,918.58 : 772,654.34 = 318,167.60 : x
  2. Step 2: Convert to fraction form
    559,918.58/772,654.34 = 318,167.60/x
  3. Step 3: Cross multiply
    559,918.58x = 772,654.34 × 318,167.60
  4. Step 4: Simplify right side
    559,918.58x = 245,833,573,919.53
  5. Step 5: Solve for x
    x = 245,833,573,919.53/559,918.58
  6. Step 6: Final answer
    x = 439,052.36

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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.