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Finding the Fourth Proportional to 608,182.56, 912,422.60 and 428,618.32

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Solution

The fourth proportional to 608,182.56, 912,422.60 and 428,618.32 is: 643,032.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,182.56 : 912,422.60 = 428,618.32 : x
  2. Step 2: Convert to fraction form
    608,182.56/912,422.60 = 428,618.32/x
  3. Step 3: Cross multiply
    608,182.56x = 912,422.60 × 428,618.32
  4. Step 4: Simplify right side
    608,182.56x = 391,081,041,942.03
  5. Step 5: Solve for x
    x = 391,081,041,942.03/608,182.56
  6. Step 6: Final answer
    x = 643,032.32

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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.