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Finding the Fourth Proportional to 808,894.60, 1,213,341.90 and 777,790.60

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Solution

The fourth proportional to 808,894.60, 1,213,341.90 and 777,790.60 is: 1,166,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,894.60 : 1,213,341.90 = 777,790.60 : x
  2. Step 2: Convert to fraction form
    808,894.60/1,213,341.90 = 777,790.60/x
  3. Step 3: Cross multiply
    808,894.60x = 1,213,341.90 × 777,790.60
  4. Step 4: Simplify right side
    808,894.60x = 943,725,924,406.14
  5. Step 5: Solve for x
    x = 943,725,924,406.14/808,894.60
  6. Step 6: Final answer
    x = 1,166,685.90

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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.