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Finding the Fourth Proportional to 480,388, 662,936.52 and 289,409.44

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Solution

The fourth proportional to 480,388, 662,936.52 and 289,409.44 is: 399,385.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,388 : 662,936.52 = 289,409.44 : x
  2. Step 2: Convert to fraction form
    480,388/662,936.52 = 289,409.44/x
  3. Step 3: Cross multiply
    480,388x = 662,936.52 × 289,409.44
  4. Step 4: Simplify right side
    480,388x = 191,860,087,008.75
  5. Step 5: Solve for x
    x = 191,860,087,008.75/480,388
  6. Step 6: Final answer
    x = 399,385.68

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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.