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Finding the Fourth Proportional to 993,999.30, 1,490,998.95 and 917,016.90

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Solution

The fourth proportional to 993,999.30, 1,490,998.95 and 917,016.90 is: 1,375,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,999.30 : 1,490,998.95 = 917,016.90 : x
  2. Step 2: Convert to fraction form
    993,999.30/1,490,998.95 = 917,016.90/x
  3. Step 3: Cross multiply
    993,999.30x = 1,490,998.95 × 917,016.90
  4. Step 4: Simplify right side
    993,999.30x = 1,367,271,235,032.25
  5. Step 5: Solve for x
    x = 1,367,271,235,032.25/993,999.30
  6. Step 6: Final answer
    x = 1,375,525.35

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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.