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Finding the Fourth Proportional to 682,800.53, 942,124.07 and 392,355.98

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Solution

The fourth proportional to 682,800.53, 942,124.07 and 392,355.98 is: 541,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,800.53 : 942,124.07 = 392,355.98 : x
  2. Step 2: Convert to fraction form
    682,800.53/942,124.07 = 392,355.98/x
  3. Step 3: Cross multiply
    682,800.53x = 942,124.07 × 392,355.98
  4. Step 4: Simplify right side
    682,800.53x = 369,648,006,094.04
  5. Step 5: Solve for x
    x = 369,648,006,094.04/682,800.53
  6. Step 6: Final answer
    x = 541,370.41

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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.