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Finding the Fourth Proportional to 909,941.80, 1,364,912.70 and 807,590.20

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Solution

The fourth proportional to 909,941.80, 1,364,912.70 and 807,590.20 is: 1,211,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,941.80 : 1,364,912.70 = 807,590.20 : x
  2. Step 2: Convert to fraction form
    909,941.80/1,364,912.70 = 807,590.20/x
  3. Step 3: Cross multiply
    909,941.80x = 1,364,912.70 × 807,590.20
  4. Step 4: Simplify right side
    909,941.80x = 1,102,290,120,375.54
  5. Step 5: Solve for x
    x = 1,102,290,120,375.54/909,941.80
  6. Step 6: Final answer
    x = 1,211,385.30

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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.