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Finding the Fourth Proportional to 3,991,135.72, 5,986,703.58 and 1,465,698.28

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Solution

The fourth proportional to 3,991,135.72, 5,986,703.58 and 1,465,698.28 is: 2,198,547.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,135.72 : 5,986,703.58 = 1,465,698.28 : x
  2. Step 2: Convert to fraction form
    3,991,135.72/5,986,703.58 = 1,465,698.28/x
  3. Step 3: Cross multiply
    3,991,135.72x = 5,986,703.58 × 1,465,698.28
  4. Step 4: Simplify right side
    3,991,135.72x = 8,774,701,140,075.84
  5. Step 5: Solve for x
    x = 8,774,701,140,075.84/3,991,135.72
  6. Step 6: Final answer
    x = 2,198,547.42

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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.