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Finding the Fourth Proportional to 1,185,485.10, 1,772,978.85 and 996,528.30

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Solution

The fourth proportional to 1,185,485.10, 1,772,978.85 and 996,528.30 is: 1,490,380.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,485.10 : 1,772,978.85 = 996,528.30 : x
  2. Step 2: Convert to fraction form
    1,185,485.10/1,772,978.85 = 996,528.30/x
  3. Step 3: Cross multiply
    1,185,485.10x = 1,772,978.85 × 996,528.30
  4. Step 4: Simplify right side
    1,185,485.10x = 1,766,823,599,326.46
  5. Step 5: Solve for x
    x = 1,766,823,599,326.46/1,185,485.10
  6. Step 6: Final answer
    x = 1,490,380.27

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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.