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Finding the Fourth Proportional to 389,328.40, 583,992.60 and 352,003.60

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Solution

The fourth proportional to 389,328.40, 583,992.60 and 352,003.60 is: 528,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,328.40 : 583,992.60 = 352,003.60 : x
  2. Step 2: Convert to fraction form
    389,328.40/583,992.60 = 352,003.60/x
  3. Step 3: Cross multiply
    389,328.40x = 583,992.60 × 352,003.60
  4. Step 4: Simplify right side
    389,328.40x = 205,567,497,573.36
  5. Step 5: Solve for x
    x = 205,567,497,573.36/389,328.40
  6. Step 6: Final answer
    x = 528,005.40

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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.