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Finding the Fourth Proportional to 608,842.40, 913,263.60 and 328,906.40

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Solution

The fourth proportional to 608,842.40, 913,263.60 and 328,906.40 is: 493,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,842.40 : 913,263.60 = 328,906.40 : x
  2. Step 2: Convert to fraction form
    608,842.40/913,263.60 = 328,906.40/x
  3. Step 3: Cross multiply
    608,842.40x = 913,263.60 × 328,906.40
  4. Step 4: Simplify right side
    608,842.40x = 300,378,242,927.04
  5. Step 5: Solve for x
    x = 300,378,242,927.04/608,842.40
  6. Step 6: Final answer
    x = 493,359.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.