Home / 664,966.46-917,676.36-393,267.25

Finding the Fourth Proportional to 664,966.46, 917,676.36 and 393,267.25

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Solution

The fourth proportional to 664,966.46, 917,676.36 and 393,267.25 is: 542,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,966.46 : 917,676.36 = 393,267.25 : x
  2. Step 2: Convert to fraction form
    664,966.46/917,676.36 = 393,267.25/x
  3. Step 3: Cross multiply
    664,966.46x = 917,676.36 × 393,267.25
  4. Step 4: Simplify right side
    664,966.46x = 360,892,060,740.37
  5. Step 5: Solve for x
    x = 360,892,060,740.37/664,966.46
  6. Step 6: Final answer
    x = 542,722.20

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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.