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Finding the Fourth Proportional to 504,574.38, 696,311.91 and 278,220.42

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Solution

The fourth proportional to 504,574.38, 696,311.91 and 278,220.42 is: 383,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,574.38 : 696,311.91 = 278,220.42 : x
  2. Step 2: Convert to fraction form
    504,574.38/696,311.91 = 278,220.42/x
  3. Step 3: Cross multiply
    504,574.38x = 696,311.91 × 278,220.42
  4. Step 4: Simplify right side
    504,574.38x = 193,728,192,051.20
  5. Step 5: Solve for x
    x = 193,728,192,051.20/504,574.38
  6. Step 6: Final answer
    x = 383,943.77

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Double scale
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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.