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Finding the Fourth Proportional to 3,266,291.09, 4,899,119.86 and 991,835.18

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Solution

The fourth proportional to 3,266,291.09, 4,899,119.86 and 991,835.18 is: 1,487,656.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,266,291.09 : 4,899,119.86 = 991,835.18 : x
  2. Step 2: Convert to fraction form
    3,266,291.09/4,899,119.86 = 991,835.18/x
  3. Step 3: Cross multiply
    3,266,291.09x = 4,899,119.86 × 991,835.18
  4. Step 4: Simplify right side
    3,266,291.09x = 4,859,119,423,300.57
  5. Step 5: Solve for x
    x = 4,859,119,423,300.57/3,266,291.09
  6. Step 6: Final answer
    x = 1,487,656.58

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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.