Home / 1,328,576.90-1,993,181.70-430,018.79

Finding the Fourth Proportional to 1,328,576.90, 1,993,181.70 and 430,018.79

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Solution

The fourth proportional to 1,328,576.90, 1,993,181.70 and 430,018.79 is: 645,130.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,576.90 : 1,993,181.70 = 430,018.79 : x
  2. Step 2: Convert to fraction form
    1,328,576.90/1,993,181.70 = 430,018.79/x
  3. Step 3: Cross multiply
    1,328,576.90x = 1,993,181.70 × 430,018.79
  4. Step 4: Simplify right side
    1,328,576.90x = 857,105,570,768.14
  5. Step 5: Solve for x
    x = 857,105,570,768.14/1,328,576.90
  6. Step 6: Final answer
    x = 645,130.57

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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.