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Finding the Fourth Proportional to 679,065.96, 937,056.17 and 392,604.50

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Solution

The fourth proportional to 679,065.96, 937,056.17 and 392,604.50 is: 541,762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,065.96 : 937,056.17 = 392,604.50 : x
  2. Step 2: Convert to fraction form
    679,065.96/937,056.17 = 392,604.50/x
  3. Step 3: Cross multiply
    679,065.96x = 937,056.17 × 392,604.50
  4. Step 4: Simplify right side
    679,065.96x = 367,892,464,409.48
  5. Step 5: Solve for x
    x = 367,892,464,409.48/679,065.96
  6. Step 6: Final answer
    x = 541,762.49

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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.