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Finding the Fourth Proportional to 864,009.90, 1,296,014.85 and 804,960.90

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Solution

The fourth proportional to 864,009.90, 1,296,014.85 and 804,960.90 is: 1,207,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,009.90 : 1,296,014.85 = 804,960.90 : x
  2. Step 2: Convert to fraction form
    864,009.90/1,296,014.85 = 804,960.90/x
  3. Step 3: Cross multiply
    864,009.90x = 1,296,014.85 × 804,960.90
  4. Step 4: Simplify right side
    864,009.90x = 1,043,241,280,069.37
  5. Step 5: Solve for x
    x = 1,043,241,280,069.37/864,009.90
  6. Step 6: Final answer
    x = 1,207,441.35

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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.