Home / 785,817.59-1,178,972.48-330,648.21

Finding the Fourth Proportional to 785,817.59, 1,178,972.48 and 330,648.21

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Solution

The fourth proportional to 785,817.59, 1,178,972.48 and 330,648.21 is: 496,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,817.59 : 1,178,972.48 = 330,648.21 : x
  2. Step 2: Convert to fraction form
    785,817.59/1,178,972.48 = 330,648.21/x
  3. Step 3: Cross multiply
    785,817.59x = 1,178,972.48 × 330,648.21
  4. Step 4: Simplify right side
    785,817.59x = 389,825,140,977.88
  5. Step 5: Solve for x
    x = 389,825,140,977.88/785,817.59
  6. Step 6: Final answer
    x = 496,075.87

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1.5x scale

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.