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Finding the Fourth Proportional to 389,511.49, 582,729.95 and 295,013.95

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Solution

The fourth proportional to 389,511.49, 582,729.95 and 295,013.95 is: 441,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,511.49 : 582,729.95 = 295,013.95 : x
  2. Step 2: Convert to fraction form
    389,511.49/582,729.95 = 295,013.95/x
  3. Step 3: Cross multiply
    389,511.49x = 582,729.95 × 295,013.95
  4. Step 4: Simplify right side
    389,511.49x = 171,913,464,332.80
  5. Step 5: Solve for x
    x = 171,913,464,332.80/389,511.49
  6. Step 6: Final answer
    x = 441,356.60

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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.