Home / 698,765.31-964,330.34-392,937.98

Finding the Fourth Proportional to 698,765.31, 964,330.34 and 392,937.98

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Solution

The fourth proportional to 698,765.31, 964,330.34 and 392,937.98 is: 542,273.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,765.31 : 964,330.34 = 392,937.98 : x
  2. Step 2: Convert to fraction form
    698,765.31/964,330.34 = 392,937.98/x
  3. Step 3: Cross multiply
    698,765.31x = 964,330.34 × 392,937.98
  4. Step 4: Simplify right side
    698,765.31x = 378,922,009,065.97
  5. Step 5: Solve for x
    x = 378,922,009,065.97/698,765.31
  6. Step 6: Final answer
    x = 542,273.64

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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.