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Finding the Fourth Proportional to 502,389.84, 693,257.76 and 287,480.64

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Solution

The fourth proportional to 502,389.84, 693,257.76 and 287,480.64 is: 396,700.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,389.84 : 693,257.76 = 287,480.64 : x
  2. Step 2: Convert to fraction form
    502,389.84/693,257.76 = 287,480.64/x
  3. Step 3: Cross multiply
    502,389.84x = 693,257.76 × 287,480.64
  4. Step 4: Simplify right side
    502,389.84x = 199,298,184,529.77
  5. Step 5: Solve for x
    x = 199,298,184,529.77/502,389.84
  6. Step 6: Final answer
    x = 396,700.27

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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.