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Finding the Fourth Proportional to 708,958.24, 978,690 and 437,074.72

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Solution

The fourth proportional to 708,958.24, 978,690 and 437,074.72 is: 603,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,958.24 : 978,690 = 437,074.72 : x
  2. Step 2: Convert to fraction form
    708,958.24/978,690 = 437,074.72/x
  3. Step 3: Cross multiply
    708,958.24x = 978,690 × 437,074.72
  4. Step 4: Simplify right side
    708,958.24x = 427,760,657,716.80
  5. Step 5: Solve for x
    x = 427,760,657,716.80/708,958.24
  6. Step 6: Final answer
    x = 603,365.10

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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.