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Finding the Fourth Proportional to 508,428.96, 700,285.08 and 378,952.50

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Solution

The fourth proportional to 508,428.96, 700,285.08 and 378,952.50 is: 521,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,428.96 : 700,285.08 = 378,952.50 : x
  2. Step 2: Convert to fraction form
    508,428.96/700,285.08 = 378,952.50/x
  3. Step 3: Cross multiply
    508,428.96x = 700,285.08 × 378,952.50
  4. Step 4: Simplify right side
    508,428.96x = 265,374,781,778.70
  5. Step 5: Solve for x
    x = 265,374,781,778.70/508,428.96
  6. Step 6: Final answer
    x = 521,950.56

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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.