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Finding the Fourth Proportional to 867,331.20, 1,300,996.80 and 804,345.60

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Solution

The fourth proportional to 867,331.20, 1,300,996.80 and 804,345.60 is: 1,206,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,331.20 : 1,300,996.80 = 804,345.60 : x
  2. Step 2: Convert to fraction form
    867,331.20/1,300,996.80 = 804,345.60/x
  3. Step 3: Cross multiply
    867,331.20x = 1,300,996.80 × 804,345.60
  4. Step 4: Simplify right side
    867,331.20x = 1,046,451,051,694.08
  5. Step 5: Solve for x
    x = 1,046,451,051,694.08/867,331.20
  6. Step 6: Final answer
    x = 1,206,518.40

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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.