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Finding the Fourth Proportional to 502,458.88, 693,360.64 and 287,600.64

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Solution

The fourth proportional to 502,458.88, 693,360.64 and 287,600.64 is: 396,870.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,458.88 : 693,360.64 = 287,600.64 : x
  2. Step 2: Convert to fraction form
    502,458.88/693,360.64 = 287,600.64/x
  3. Step 3: Cross multiply
    502,458.88x = 693,360.64 × 287,600.64
  4. Step 4: Simplify right side
    502,458.88x = 199,410,963,814.81
  5. Step 5: Solve for x
    x = 199,410,963,814.81/502,458.88
  6. Step 6: Final answer
    x = 396,870.22

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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.