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Finding the Fourth Proportional to 922,861.80, 1,382,802.30 and 522,311.40

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Solution

The fourth proportional to 922,861.80, 1,382,802.30 and 522,311.40 is: 782,623.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,861.80 : 1,382,802.30 = 522,311.40 : x
  2. Step 2: Convert to fraction form
    922,861.80/1,382,802.30 = 522,311.40/x
  3. Step 3: Cross multiply
    922,861.80x = 1,382,802.30 × 522,311.40
  4. Step 4: Simplify right side
    922,861.80x = 722,253,405,236.22
  5. Step 5: Solve for x
    x = 722,253,405,236.22/922,861.80
  6. Step 6: Final answer
    x = 782,623.58

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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.