Home / 627,400.58-865,809.90-355,467.87

Finding the Fourth Proportional to 627,400.58, 865,809.90 and 355,467.87

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Solution

The fourth proportional to 627,400.58, 865,809.90 and 355,467.87 is: 490,544.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,400.58 : 865,809.90 = 355,467.87 : x
  2. Step 2: Convert to fraction form
    627,400.58/865,809.90 = 355,467.87/x
  3. Step 3: Cross multiply
    627,400.58x = 865,809.90 × 355,467.87
  4. Step 4: Simplify right side
    627,400.58x = 307,767,600,977.91
  5. Step 5: Solve for x
    x = 307,767,600,977.91/627,400.58
  6. Step 6: Final answer
    x = 490,544.02

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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.