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Finding the Fourth Proportional to 932,415.20, 1,396,549.20 and 807,999.20

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Solution

The fourth proportional to 932,415.20, 1,396,549.20 and 807,999.20 is: 1,210,201.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    932,415.20 : 1,396,549.20 = 807,999.20 : x
  2. Step 2: Convert to fraction form
    932,415.20/1,396,549.20 = 807,999.20/x
  3. Step 3: Cross multiply
    932,415.20x = 1,396,549.20 × 807,999.20
  4. Step 4: Simplify right side
    932,415.20x = 1,128,410,636,360.64
  5. Step 5: Solve for x
    x = 1,128,410,636,360.64/932,415.20
  6. Step 6: Final answer
    x = 1,210,201.89

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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.