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Finding the Fourth Proportional to 679,065.92, 937,056.13 and 392,604.46

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Solution

The fourth proportional to 679,065.92, 937,056.13 and 392,604.46 is: 541,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,065.92 : 937,056.13 = 392,604.46 : x
  2. Step 2: Convert to fraction form
    679,065.92/937,056.13 = 392,604.46/x
  3. Step 3: Cross multiply
    679,065.92x = 937,056.13 × 392,604.46
  4. Step 4: Simplify right side
    679,065.92x = 367,892,417,855.13
  5. Step 5: Solve for x
    x = 367,892,417,855.13/679,065.92
  6. Step 6: Final answer
    x = 541,762.45

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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.