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Finding the Fourth Proportional to 714,229.35, 985,664.92 and 391,950.98

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Solution

The fourth proportional to 714,229.35, 985,664.92 and 391,950.98 is: 540,907.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,229.35 : 985,664.92 = 391,950.98 : x
  2. Step 2: Convert to fraction form
    714,229.35/985,664.92 = 391,950.98/x
  3. Step 3: Cross multiply
    714,229.35x = 985,664.92 × 391,950.98
  4. Step 4: Simplify right side
    714,229.35x = 386,332,325,442.85
  5. Step 5: Solve for x
    x = 386,332,325,442.85/714,229.35
  6. Step 6: Final answer
    x = 540,907.94

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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.