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Finding the Fourth Proportional to 507,615.39, 760,910.42 and 318,208.52

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Solution

The fourth proportional to 507,615.39, 760,910.42 and 318,208.52 is: 476,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,615.39 : 760,910.42 = 318,208.52 : x
  2. Step 2: Convert to fraction form
    507,615.39/760,910.42 = 318,208.52/x
  3. Step 3: Cross multiply
    507,615.39x = 760,910.42 × 318,208.52
  4. Step 4: Simplify right side
    507,615.39x = 242,128,173,205.18
  5. Step 5: Solve for x
    x = 242,128,173,205.18/507,615.39
  6. Step 6: Final answer
    x = 476,991.40

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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.