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Finding the Fourth Proportional to 508,956.98, 702,633.30 and 392,415.89

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Solution

The fourth proportional to 508,956.98, 702,633.30 and 392,415.89 is: 541,744.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,956.98 : 702,633.30 = 392,415.89 : x
  2. Step 2: Convert to fraction form
    508,956.98/702,633.30 = 392,415.89/x
  3. Step 3: Cross multiply
    508,956.98x = 702,633.30 × 392,415.89
  4. Step 4: Simplify right side
    508,956.98x = 275,724,473,519.72
  5. Step 5: Solve for x
    x = 275,724,473,519.72/508,956.98
  6. Step 6: Final answer
    x = 541,744.17

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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.