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Finding the Fourth Proportional to 804,756.72, 1,207,281.72 and 265,042.40

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Solution

The fourth proportional to 804,756.72, 1,207,281.72 and 265,042.40 is: 397,611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,756.72 : 1,207,281.72 = 265,042.40 : x
  2. Step 2: Convert to fraction form
    804,756.72/1,207,281.72 = 265,042.40/x
  3. Step 3: Cross multiply
    804,756.72x = 1,207,281.72 × 265,042.40
  4. Step 4: Simplify right side
    804,756.72x = 319,980,844,544.93
  5. Step 5: Solve for x
    x = 319,980,844,544.93/804,756.72
  6. Step 6: Final answer
    x = 397,611.90

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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.