Home / 991,288.45-1,486,933.85-271,636.21

Finding the Fourth Proportional to 991,288.45, 1,486,933.85 and 271,636.21

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Solution

The fourth proportional to 991,288.45, 1,486,933.85 and 271,636.21 is: 407,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,288.45 : 1,486,933.85 = 271,636.21 : x
  2. Step 2: Convert to fraction form
    991,288.45/1,486,933.85 = 271,636.21/x
  3. Step 3: Cross multiply
    991,288.45x = 1,486,933.85 × 271,636.21
  4. Step 4: Simplify right side
    991,288.45x = 403,905,075,534.71
  5. Step 5: Solve for x
    x = 403,905,075,534.71/991,288.45
  6. Step 6: Final answer
    x = 407,454.64

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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.