Home / 665,087.75-917,821.20-363,281.75

Finding the Fourth Proportional to 665,087.75, 917,821.20 and 363,281.75

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Solution

The fourth proportional to 665,087.75, 917,821.20 and 363,281.75 is: 501,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,087.75 : 917,821.20 = 363,281.75 : x
  2. Step 2: Convert to fraction form
    665,087.75/917,821.20 = 363,281.75/x
  3. Step 3: Cross multiply
    665,087.75x = 917,821.20 × 363,281.75
  4. Step 4: Simplify right side
    665,087.75x = 333,427,691,723.10
  5. Step 5: Solve for x
    x = 333,427,691,723.10/665,087.75
  6. Step 6: Final answer
    x = 501,328.87

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1.5x scale

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.