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Finding the Fourth Proportional to 696,035.84, 960,620.80 and 394,240

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Solution

The fourth proportional to 696,035.84, 960,620.80 and 394,240 is: 544,102.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,035.84 : 960,620.80 = 394,240 : x
  2. Step 2: Convert to fraction form
    696,035.84/960,620.80 = 394,240/x
  3. Step 3: Cross multiply
    696,035.84x = 960,620.80 × 394,240
  4. Step 4: Simplify right side
    696,035.84x = 378,715,144,192
  5. Step 5: Solve for x
    x = 378,715,144,192/696,035.84
  6. Step 6: Final answer
    x = 544,102.94

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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.