Home / 627,015.36-865,334.58-355,131.63

Finding the Fourth Proportional to 627,015.36, 865,334.58 and 355,131.63

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Solution

The fourth proportional to 627,015.36, 865,334.58 and 355,131.63 is: 490,111.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,015.36 : 865,334.58 = 355,131.63 : x
  2. Step 2: Convert to fraction form
    627,015.36/865,334.58 = 355,131.63/x
  3. Step 3: Cross multiply
    627,015.36x = 865,334.58 × 355,131.63
  4. Step 4: Simplify right side
    627,015.36x = 307,307,679,890.77
  5. Step 5: Solve for x
    x = 307,307,679,890.77/627,015.36
  6. Step 6: Final answer
    x = 490,111.88

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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.