Home / 638,576.16-958,948.88-426,705.37

Finding the Fourth Proportional to 638,576.16, 958,948.88 and 426,705.37

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Solution

The fourth proportional to 638,576.16, 958,948.88 and 426,705.37 is: 640,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,576.16 : 958,948.88 = 426,705.37 : x
  2. Step 2: Convert to fraction form
    638,576.16/958,948.88 = 426,705.37/x
  3. Step 3: Cross multiply
    638,576.16x = 958,948.88 × 426,705.37
  4. Step 4: Simplify right side
    638,576.16x = 409,188,632,120.59
  5. Step 5: Solve for x
    x = 409,188,632,120.59/638,576.16
  6. Step 6: Final answer
    x = 640,782.82

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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.