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Finding the Fourth Proportional to 620,078.94, 855,680.01 and 344,454.65

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Solution

The fourth proportional to 620,078.94, 855,680.01 and 344,454.65 is: 475,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,078.94 : 855,680.01 = 344,454.65 : x
  2. Step 2: Convert to fraction form
    620,078.94/855,680.01 = 344,454.65/x
  3. Step 3: Cross multiply
    620,078.94x = 855,680.01 × 344,454.65
  4. Step 4: Simplify right side
    620,078.94x = 294,742,954,078.15
  5. Step 5: Solve for x
    x = 294,742,954,078.15/620,078.94
  6. Step 6: Final answer
    x = 475,331.34

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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.