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Finding the Fourth Proportional to 708,974.55, 978,478.92 and 450,875.88

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Solution

The fourth proportional to 708,974.55, 978,478.92 and 450,875.88 is: 622,268.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,974.55 : 978,478.92 = 450,875.88 : x
  2. Step 2: Convert to fraction form
    708,974.55/978,478.92 = 450,875.88/x
  3. Step 3: Cross multiply
    708,974.55x = 978,478.92 × 450,875.88
  4. Step 4: Simplify right side
    708,974.55x = 441,172,544,116.45
  5. Step 5: Solve for x
    x = 441,172,544,116.45/708,974.55
  6. Step 6: Final answer
    x = 622,268.52

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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.