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Finding the Fourth Proportional to 700,351.38, 966,520.86 and 428,333.94

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Solution

The fourth proportional to 700,351.38, 966,520.86 and 428,333.94 is: 591,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,351.38 : 966,520.86 = 428,333.94 : x
  2. Step 2: Convert to fraction form
    700,351.38/966,520.86 = 428,333.94/x
  3. Step 3: Cross multiply
    700,351.38x = 966,520.86 × 428,333.94
  4. Step 4: Simplify right side
    700,351.38x = 413,993,688,055.99
  5. Step 5: Solve for x
    x = 413,993,688,055.99/700,351.38
  6. Step 6: Final answer
    x = 591,122.83

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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.