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Finding the Fourth Proportional to 990,998.60, 1,368,145.62 and 652,451

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Solution

The fourth proportional to 990,998.60, 1,368,145.62 and 652,451 is: 900,756.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,998.60 : 1,368,145.62 = 652,451 : x
  2. Step 2: Convert to fraction form
    990,998.60/1,368,145.62 = 652,451/x
  3. Step 3: Cross multiply
    990,998.60x = 1,368,145.62 × 652,451
  4. Step 4: Simplify right side
    990,998.60x = 892,647,977,914.62
  5. Step 5: Solve for x
    x = 892,647,977,914.62/990,998.60
  6. Step 6: Final answer
    x = 900,756.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.