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Finding the Fourth Proportional to 684,868.69, 945,100.60 and 378,937.09

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Solution

The fourth proportional to 684,868.69, 945,100.60 and 378,937.09 is: 522,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,868.69 : 945,100.60 = 378,937.09 : x
  2. Step 2: Convert to fraction form
    684,868.69/945,100.60 = 378,937.09/x
  3. Step 3: Cross multiply
    684,868.69x = 945,100.60 × 378,937.09
  4. Step 4: Simplify right side
    684,868.69x = 358,133,671,121.25
  5. Step 5: Solve for x
    x = 358,133,671,121.25/684,868.69
  6. Step 6: Final answer
    x = 522,923.12

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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.