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Finding the Fourth Proportional to 462,999.52, 638,986.96 and 281,724.64

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Solution

The fourth proportional to 462,999.52, 638,986.96 and 281,724.64 is: 388,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,999.52 : 638,986.96 = 281,724.64 : x
  2. Step 2: Convert to fraction form
    462,999.52/638,986.96 = 281,724.64/x
  3. Step 3: Cross multiply
    462,999.52x = 638,986.96 × 281,724.64
  4. Step 4: Simplify right side
    462,999.52x = 180,018,371,270.69
  5. Step 5: Solve for x
    x = 180,018,371,270.69/462,999.52
  6. Step 6: Final answer
    x = 388,808.98

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1.5x scale

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.