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Finding the Fourth Proportional to 708,933.28, 978,080.88 and 454,424.80

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Solution

The fourth proportional to 708,933.28, 978,080.88 and 454,424.80 is: 626,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,933.28 : 978,080.88 = 454,424.80 : x
  2. Step 2: Convert to fraction form
    708,933.28/978,080.88 = 454,424.80/x
  3. Step 3: Cross multiply
    708,933.28x = 978,080.88 × 454,424.80
  4. Step 4: Simplify right side
    708,933.28x = 444,464,208,277.82
  5. Step 5: Solve for x
    x = 444,464,208,277.82/708,933.28
  6. Step 6: Final answer
    x = 626,947.87

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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.