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Finding the Fourth Proportional to 1,230,438.30, 1,845,657.45 and 755,583.90

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Solution

The fourth proportional to 1,230,438.30, 1,845,657.45 and 755,583.90 is: 1,133,375.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,438.30 : 1,845,657.45 = 755,583.90 : x
  2. Step 2: Convert to fraction form
    1,230,438.30/1,845,657.45 = 755,583.90/x
  3. Step 3: Cross multiply
    1,230,438.30x = 1,845,657.45 × 755,583.90
  4. Step 4: Simplify right side
    1,230,438.30x = 1,394,549,054,135.06
  5. Step 5: Solve for x
    x = 1,394,549,054,135.06/1,230,438.30
  6. Step 6: Final answer
    x = 1,133,375.85

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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.