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Finding the Fourth Proportional to 6,479,970.75, 9,721,530.90 and 1,992,246.75

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Solution

The fourth proportional to 6,479,970.75, 9,721,530.90 and 1,992,246.75 is: 2,988,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479,970.75 : 9,721,530.90 = 1,992,246.75 : x
  2. Step 2: Convert to fraction form
    6,479,970.75/9,721,530.90 = 1,992,246.75/x
  3. Step 3: Cross multiply
    6,479,970.75x = 9,721,530.90 × 1,992,246.75
  4. Step 4: Simplify right side
    6,479,970.75x = 19,367,688,340,549.57
  5. Step 5: Solve for x
    x = 19,367,688,340,549.57/6,479,970.75
  6. Step 6: Final answer
    x = 2,988,854.28

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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.