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Finding the Fourth Proportional to 6,659,689.12, 9,985,488.40 and 2,611,326.68

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Solution

The fourth proportional to 6,659,689.12, 9,985,488.40 and 2,611,326.68 is: 3,915,403.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659,689.12 : 9,985,488.40 = 2,611,326.68 : x
  2. Step 2: Convert to fraction form
    6,659,689.12/9,985,488.40 = 2,611,326.68/x
  3. Step 3: Cross multiply
    6,659,689.12x = 9,985,488.40 × 2,611,326.68
  4. Step 4: Simplify right side
    6,659,689.12x = 26,075,372,271,750.52
  5. Step 5: Solve for x
    x = 26,075,372,271,750.52/6,659,689.12
  6. Step 6: Final answer
    x = 3,915,403.83

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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.