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Finding the Fourth Proportional to 471,905.80, 704,293.51 and 439,908.60

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Solution

The fourth proportional to 471,905.80, 704,293.51 and 439,908.60 is: 656,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,905.80 : 704,293.51 = 439,908.60 : x
  2. Step 2: Convert to fraction form
    471,905.80/704,293.51 = 439,908.60/x
  3. Step 3: Cross multiply
    471,905.80x = 704,293.51 × 439,908.60
  4. Step 4: Simplify right side
    471,905.80x = 309,824,771,973.19
  5. Step 5: Solve for x
    x = 309,824,771,973.19/471,905.80
  6. Step 6: Final answer
    x = 656,539.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.