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Finding the Fourth Proportional to 3,826,347.74, 5,739,852.08 and 986,435.90

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Solution

The fourth proportional to 3,826,347.74, 5,739,852.08 and 986,435.90 is: 1,479,739.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826,347.74 : 5,739,852.08 = 986,435.90 : x
  2. Step 2: Convert to fraction form
    3,826,347.74/5,739,852.08 = 986,435.90/x
  3. Step 3: Cross multiply
    3,826,347.74x = 5,739,852.08 × 986,435.90
  4. Step 4: Simplify right side
    3,826,347.74x = 5,661,996,126,168.50
  5. Step 5: Solve for x
    x = 5,661,996,126,168.50/3,826,347.74
  6. Step 6: Final answer
    x = 1,479,739.04

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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.