Home / 780,125.10-1,170,576.45-443,424.30

Finding the Fourth Proportional to 780,125.10, 1,170,576.45 and 443,424.30

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Solution

The fourth proportional to 780,125.10, 1,170,576.45 and 443,424.30 is: 665,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,125.10 : 1,170,576.45 = 443,424.30 : x
  2. Step 2: Convert to fraction form
    780,125.10/1,170,576.45 = 443,424.30/x
  3. Step 3: Cross multiply
    780,125.10x = 1,170,576.45 × 443,424.30
  4. Step 4: Simplify right side
    780,125.10x = 519,062,042,937.74
  5. Step 5: Solve for x
    x = 519,062,042,937.74/780,125.10
  6. Step 6: Final answer
    x = 665,357.44

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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.