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Finding the Fourth Proportional to 624,986.36, 862,482.56 and 338,506.50

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Solution

The fourth proportional to 624,986.36, 862,482.56 and 338,506.50 is: 467,139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,986.36 : 862,482.56 = 338,506.50 : x
  2. Step 2: Convert to fraction form
    624,986.36/862,482.56 = 338,506.50/x
  3. Step 3: Cross multiply
    624,986.36x = 862,482.56 × 338,506.50
  4. Step 4: Simplify right side
    624,986.36x = 291,955,951,004.11
  5. Step 5: Solve for x
    x = 291,955,951,004.11/624,986.36
  6. Step 6: Final answer
    x = 467,139.72

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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.