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Finding the Fourth Proportional to 670,861.79, 925,772.59 and 384,363.43

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Solution

The fourth proportional to 670,861.79, 925,772.59 and 384,363.43 is: 530,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,861.79 : 925,772.59 = 384,363.43 : x
  2. Step 2: Convert to fraction form
    670,861.79/925,772.59 = 384,363.43/x
  3. Step 3: Cross multiply
    670,861.79x = 925,772.59 × 384,363.43
  4. Step 4: Simplify right side
    670,861.79x = 355,833,126,258.41
  5. Step 5: Solve for x
    x = 355,833,126,258.41/670,861.79
  6. Step 6: Final answer
    x = 530,411.97

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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.