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Finding the Fourth Proportional to 401,477.04, 552,647.72 and 347,004.40

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Solution

The fourth proportional to 401,477.04, 552,647.72 and 347,004.40 is: 477,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,477.04 : 552,647.72 = 347,004.40 : x
  2. Step 2: Convert to fraction form
    401,477.04/552,647.72 = 347,004.40/x
  3. Step 3: Cross multiply
    401,477.04x = 552,647.72 × 347,004.40
  4. Step 4: Simplify right side
    401,477.04x = 191,771,190,489.97
  5. Step 5: Solve for x
    x = 191,771,190,489.97/401,477.04
  6. Step 6: Final answer
    x = 477,664.15

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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.