Home / 753,704.80-1,130,168.40-280,146.40

Finding the Fourth Proportional to 753,704.80, 1,130,168.40 and 280,146.40

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Solution

The fourth proportional to 753,704.80, 1,130,168.40 and 280,146.40 is: 420,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,704.80 : 1,130,168.40 = 280,146.40 : x
  2. Step 2: Convert to fraction form
    753,704.80/1,130,168.40 = 280,146.40/x
  3. Step 3: Cross multiply
    753,704.80x = 1,130,168.40 × 280,146.40
  4. Step 4: Simplify right side
    753,704.80x = 316,612,608,653.76
  5. Step 5: Solve for x
    x = 316,612,608,653.76/753,704.80
  6. Step 6: Final answer
    x = 420,075.09

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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.