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Finding the Fourth Proportional to 911,230.20, 1,365,751.80 and 626,920.20

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Solution

The fourth proportional to 911,230.20, 1,365,751.80 and 626,920.20 is: 939,627.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,230.20 : 1,365,751.80 = 626,920.20 : x
  2. Step 2: Convert to fraction form
    911,230.20/1,365,751.80 = 626,920.20/x
  3. Step 3: Cross multiply
    911,230.20x = 1,365,751.80 × 626,920.20
  4. Step 4: Simplify right side
    911,230.20x = 856,217,391,606.36
  5. Step 5: Solve for x
    x = 856,217,391,606.36/911,230.20
  6. Step 6: Final answer
    x = 939,627.98

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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.