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Finding the Fourth Proportional to 502,479.84, 693,381.60 and 287,570.88

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Solution

The fourth proportional to 502,479.84, 693,381.60 and 287,570.88 is: 396,824.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,479.84 : 693,381.60 = 287,570.88 : x
  2. Step 2: Convert to fraction form
    502,479.84/693,381.60 = 287,570.88/x
  3. Step 3: Cross multiply
    502,479.84x = 693,381.60 × 287,570.88
  4. Step 4: Simplify right side
    502,479.84x = 199,396,356,887.81
  5. Step 5: Solve for x
    x = 199,396,356,887.81/502,479.84
  6. Step 6: Final answer
    x = 396,824.59

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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.