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Finding the Fourth Proportional to 452,139.94, 678,006.70 and 325,248.38

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Solution

The fourth proportional to 452,139.94, 678,006.70 and 325,248.38 is: 487,726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,139.94 : 678,006.70 = 325,248.38 : x
  2. Step 2: Convert to fraction form
    452,139.94/678,006.70 = 325,248.38/x
  3. Step 3: Cross multiply
    452,139.94x = 678,006.70 × 325,248.38
  4. Step 4: Simplify right side
    452,139.94x = 220,520,580,804.15
  5. Step 5: Solve for x
    x = 220,520,580,804.15/452,139.94
  6. Step 6: Final answer
    x = 487,726.39

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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.