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Finding the Fourth Proportional to 1,992,706.60, 2,989,934.70 and 927,200.20

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Solution

The fourth proportional to 1,992,706.60, 2,989,934.70 and 927,200.20 is: 1,391,207.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,706.60 : 2,989,934.70 = 927,200.20 : x
  2. Step 2: Convert to fraction form
    1,992,706.60/2,989,934.70 = 927,200.20/x
  3. Step 3: Cross multiply
    1,992,706.60x = 2,989,934.70 × 927,200.20
  4. Step 4: Simplify right side
    1,992,706.60x = 2,772,268,051,826.94
  5. Step 5: Solve for x
    x = 2,772,268,051,826.94/1,992,706.60
  6. Step 6: Final answer
    x = 1,391,207.34

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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.