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Finding the Fourth Proportional to 578,015.52, 797,645 and 319,903.28

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Solution

The fourth proportional to 578,015.52, 797,645 and 319,903.28 is: 441,457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,015.52 : 797,645 = 319,903.28 : x
  2. Step 2: Convert to fraction form
    578,015.52/797,645 = 319,903.28/x
  3. Step 3: Cross multiply
    578,015.52x = 797,645 × 319,903.28
  4. Step 4: Simplify right side
    578,015.52x = 255,169,251,775.60
  5. Step 5: Solve for x
    x = 255,169,251,775.60/578,015.52
  6. Step 6: Final answer
    x = 441,457.44

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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.