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Finding the Fourth Proportional to 911,626.40, 1,368,670.80 and 532,935.20

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Solution

The fourth proportional to 911,626.40, 1,368,670.80 and 532,935.20 is: 800,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,626.40 : 1,368,670.80 = 532,935.20 : x
  2. Step 2: Convert to fraction form
    911,626.40/1,368,670.80 = 532,935.20/x
  3. Step 3: Cross multiply
    911,626.40x = 1,368,670.80 × 532,935.20
  4. Step 4: Simplify right side
    911,626.40x = 729,412,846,532.16
  5. Step 5: Solve for x
    x = 729,412,846,532.16/911,626.40
  6. Step 6: Final answer
    x = 800,122.56

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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.