Home / 401,127.28-553,236.78-340,897.30

Finding the Fourth Proportional to 401,127.28, 553,236.78 and 340,897.30

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Solution

The fourth proportional to 401,127.28, 553,236.78 and 340,897.30 is: 470,167.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,127.28 : 553,236.78 = 340,897.30 : x
  2. Step 2: Convert to fraction form
    401,127.28/553,236.78 = 340,897.30/x
  3. Step 3: Cross multiply
    401,127.28x = 553,236.78 × 340,897.30
  4. Step 4: Simplify right side
    401,127.28x = 188,596,923,179.60
  5. Step 5: Solve for x
    x = 188,596,923,179.60/401,127.28
  6. Step 6: Final answer
    x = 470,167.29

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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.