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Finding the Fourth Proportional to 579,970.64, 800,368.18 and 321,864.30

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Solution

The fourth proportional to 579,970.64, 800,368.18 and 321,864.30 is: 444,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,970.64 : 800,368.18 = 321,864.30 : x
  2. Step 2: Convert to fraction form
    579,970.64/800,368.18 = 321,864.30/x
  3. Step 3: Cross multiply
    579,970.64x = 800,368.18 × 321,864.30
  4. Step 4: Simplify right side
    579,970.64x = 257,609,943,997.97
  5. Step 5: Solve for x
    x = 257,609,943,997.97/579,970.64
  6. Step 6: Final answer
    x = 444,177.56

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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.