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Finding the Fourth Proportional to 494,760.60, 742,165.20 and 258,564.60

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Solution

The fourth proportional to 494,760.60, 742,165.20 and 258,564.60 is: 387,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,760.60 : 742,165.20 = 258,564.60 : x
  2. Step 2: Convert to fraction form
    494,760.60/742,165.20 = 258,564.60/x
  3. Step 3: Cross multiply
    494,760.60x = 742,165.20 × 258,564.60
  4. Step 4: Simplify right side
    494,760.60x = 191,897,648,071.92
  5. Step 5: Solve for x
    x = 191,897,648,071.92/494,760.60
  6. Step 6: Final answer
    x = 387,859.60

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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.