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Finding the Fourth Proportional to 700,930, 967,282.58 and 378,640.04

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Solution

The fourth proportional to 700,930, 967,282.58 and 378,640.04 is: 522,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,930 : 967,282.58 = 378,640.04 : x
  2. Step 2: Convert to fraction form
    700,930/967,282.58 = 378,640.04/x
  3. Step 3: Cross multiply
    700,930x = 967,282.58 × 378,640.04
  4. Step 4: Simplify right side
    700,930x = 366,251,914,782.50
  5. Step 5: Solve for x
    x = 366,251,914,782.50/700,930
  6. Step 6: Final answer
    x = 522,522.81

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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.