Home / 742,172.34-1,024,198.20-402,640.50

Finding the Fourth Proportional to 742,172.34, 1,024,198.20 and 402,640.50

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Solution

The fourth proportional to 742,172.34, 1,024,198.20 and 402,640.50 is: 555,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,172.34 : 1,024,198.20 = 402,640.50 : x
  2. Step 2: Convert to fraction form
    742,172.34/1,024,198.20 = 402,640.50/x
  3. Step 3: Cross multiply
    742,172.34x = 1,024,198.20 × 402,640.50
  4. Step 4: Simplify right side
    742,172.34x = 412,383,675,347.10
  5. Step 5: Solve for x
    x = 412,383,675,347.10/742,172.34
  6. Step 6: Final answer
    x = 555,644.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.