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Finding the Fourth Proportional to 1,300,368.80, 1,946,751.60 and 927,120.80

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Solution

The fourth proportional to 1,300,368.80, 1,946,751.60 and 927,120.80 is: 1,387,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,368.80 : 1,946,751.60 = 927,120.80 : x
  2. Step 2: Convert to fraction form
    1,300,368.80/1,946,751.60 = 927,120.80/x
  3. Step 3: Cross multiply
    1,300,368.80x = 1,946,751.60 × 927,120.80
  4. Step 4: Simplify right side
    1,300,368.80x = 1,804,873,900,793.28
  5. Step 5: Solve for x
    x = 1,804,873,900,793.28/1,300,368.80
  6. Step 6: Final answer
    x = 1,387,970.78

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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.