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Finding the Fourth Proportional to 400,707, 552,918.06 and 340,518.84

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Solution

The fourth proportional to 400,707, 552,918.06 and 340,518.84 is: 469,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,707 : 552,918.06 = 340,518.84 : x
  2. Step 2: Convert to fraction form
    400,707/552,918.06 = 340,518.84/x
  3. Step 3: Cross multiply
    400,707x = 552,918.06 × 340,518.84
  4. Step 4: Simplify right side
    400,707x = 188,279,016,406.25
  5. Step 5: Solve for x
    x = 188,279,016,406.25/400,707
  6. Step 6: Final answer
    x = 469,867.05

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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.