Home / 627,319.50-865,708.78-340,844.38

Finding the Fourth Proportional to 627,319.50, 865,708.78 and 340,844.38

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Solution

The fourth proportional to 627,319.50, 865,708.78 and 340,844.38 is: 470,369.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,319.50 : 865,708.78 = 340,844.38 : x
  2. Step 2: Convert to fraction form
    627,319.50/865,708.78 = 340,844.38/x
  3. Step 3: Cross multiply
    627,319.50x = 865,708.78 × 340,844.38
  4. Step 4: Simplify right side
    627,319.50x = 295,071,972,379.66
  5. Step 5: Solve for x
    x = 295,071,972,379.66/627,319.50
  6. Step 6: Final answer
    x = 470,369.52

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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.