Home / 627,312.45-865,662.97-355,374.80

Finding the Fourth Proportional to 627,312.45, 865,662.97 and 355,374.80

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Solution

The fourth proportional to 627,312.45, 865,662.97 and 355,374.80 is: 490,401.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,312.45 : 865,662.97 = 355,374.80 : x
  2. Step 2: Convert to fraction form
    627,312.45/865,662.97 = 355,374.80/x
  3. Step 3: Cross multiply
    627,312.45x = 865,662.97 × 355,374.80
  4. Step 4: Simplify right side
    627,312.45x = 307,634,804,831.16
  5. Step 5: Solve for x
    x = 307,634,804,831.16/627,312.45
  6. Step 6: Final answer
    x = 490,401.24

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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.