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Finding the Fourth Proportional to 494,920.60, 742,405.20 and 258,724.60

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Solution

The fourth proportional to 494,920.60, 742,405.20 and 258,724.60 is: 388,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,920.60 : 742,405.20 = 258,724.60 : x
  2. Step 2: Convert to fraction form
    494,920.60/742,405.20 = 258,724.60/x
  3. Step 3: Cross multiply
    494,920.60x = 742,405.20 × 258,724.60
  4. Step 4: Simplify right side
    494,920.60x = 192,078,488,407.92
  5. Step 5: Solve for x
    x = 192,078,488,407.92/494,920.60
  6. Step 6: Final answer
    x = 388,099.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.