Home / 639,389.70-958,731.39-402,224.94

Finding the Fourth Proportional to 639,389.70, 958,731.39 and 402,224.94

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Solution

The fourth proportional to 639,389.70, 958,731.39 and 402,224.94 is: 603,115.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,389.70 : 958,731.39 = 402,224.94 : x
  2. Step 2: Convert to fraction form
    639,389.70/958,731.39 = 402,224.94/x
  3. Step 3: Cross multiply
    639,389.70x = 958,731.39 × 402,224.94
  4. Step 4: Simplify right side
    639,389.70x = 385,625,675,818.87
  5. Step 5: Solve for x
    x = 385,625,675,818.87/639,389.70
  6. Step 6: Final answer
    x = 603,115.25

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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.