Home / 627,039.54-865,320.81-340,565.22

Finding the Fourth Proportional to 627,039.54, 865,320.81 and 340,565.22

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Solution

The fourth proportional to 627,039.54, 865,320.81 and 340,565.22 is: 469,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,039.54 : 865,320.81 = 340,565.22 : x
  2. Step 2: Convert to fraction form
    627,039.54/865,320.81 = 340,565.22/x
  3. Step 3: Cross multiply
    627,039.54x = 865,320.81 × 340,565.22
  4. Step 4: Simplify right side
    627,039.54x = 294,698,172,028.23
  5. Step 5: Solve for x
    x = 294,698,172,028.23/627,039.54
  6. Step 6: Final answer
    x = 469,983.40

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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.