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Finding the Fourth Proportional to 634,459.56, 875,551.86 and 392,694

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Solution

The fourth proportional to 634,459.56, 875,551.86 and 392,694 is: 541,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,459.56 : 875,551.86 = 392,694 : x
  2. Step 2: Convert to fraction form
    634,459.56/875,551.86 = 392,694/x
  3. Step 3: Cross multiply
    634,459.56x = 875,551.86 × 392,694
  4. Step 4: Simplify right side
    634,459.56x = 343,823,962,110.84
  5. Step 5: Solve for x
    x = 343,823,962,110.84/634,459.56
  6. Step 6: Final answer
    x = 541,916.28

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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.